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Ginkgophyta Bessey

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1. Supertaxonomy Overview

Ginkgophyta Bessey, the ginkgophytes or ginkgo division, is an ancient lineage of gymnosperm seed plants represented today by a single living species, Ginkgo biloba L. The surviving lineage includes Ginkgoopsida Engl., Ginkgoidae Engl., Ginkgoales Gorozh., Ginkgoaceae Engl., and Ginkgo L. Modern diversity is therefore reduced to one class, subclass, order, family, genus, and species, but the fossil record documents a formerly broader radiation of woody plants with diverse leaves, shoot systems, and reproductive structures (Zhou 2009).

Tree TSAR uses Ginkgophyta as its broadest ginkgo-centered supertaxonomy unit. The division provides an evolutionary framework for both the securely recognized ginkgoalean lineage and the uncertain fossil plants that have been proposed as its early relatives. This broader scope distinguishes Ginkgophyta from Ginkgoopsida, which represents the more tightly circumscribed class-level lineage, and from Ginkgoales, which contains the established order-level fossil radiation.

The formal name Ginkgophyta is attributed to Charles Edwin Bessey and is retained by World Flora Online. Other classifications omit the division, use Ginkgoopsida at approximately the same position, or begin their formal treatment with Ginkgoidae or Ginkgoales. These systems differ principally in rank architecture rather than in their recognition of the living ginkgo lineage as a distinct branch of gymnosperms (Bessey 1907; Christenhusz et al. 2011; Yang et al. 2022; World Flora Online 2026).

The only living ginkgophyte is a large deciduous tree with differentiated long and short shoots, fan-shaped leaves with repeatedly forked veins, exposed stalked ovules, seeds with a fleshy outer covering, and large motile sperm. Fossil ginkgophytes displayed a considerably wider range of leaf forms and reproductive architectures. No single fan-shaped leaf or forked venation pattern is sufficient by itself to demonstrate membership in the division.

Ginkgophyta belongs to the gymnosperms, the living seed plants represented by ginkgo, cycads, conifers, and gnetophytes. Most large nuclear and plastid datasets recover ginkgo and cycads as sister lineages, together forming the earliest-diverging branch among living gymnosperms. Some mitochondrial evidence preserves a conflicting signal, illustrating the difficulty of resolving divergences that occurred deep in seed-plant history (Ran et al. 2018; Stull et al. 2021; Liu et al. 2022).

The division is evolutionarily important because its sole living species preserves a combination of reproductive and developmental features absent from conifers, gnetophytes, and flowering plants. It is equally important paleobotanically because fossils associated with the ginkgo lineage illuminate the long-term evolution of seed-bearing structures, short shoots, divided leaves, and reproductive reduction.

2. Placement in Tree TSAR

The Tree TSAR sequence for the surviving ginkgophyte lineage is:

Seed Plants → Gymnosperms → Ginkgophyta Bessey → Ginkgoopsida Engl. → Ginkgoidae Engl. → Ginkgoales Gorozh. → Ginkgoaceae Engl. → Ginkgo L. → Ginkgo biloba L.

The immediately broader Tree TSAR unit is Gymnosperms, and the immediately narrower unit is Ginkgoopsida Engl.

Ginkgophyta is retained as a fixed Tree TSAR tentpole because it provides a stable and understandable name for the broad evolutionary lineage surrounding ginkgo. It also creates room to discuss possible Paleozoic stem relatives and historically associated fossil plants without forcing them into the more securely delimited class Ginkgoopsida or order Ginkgoales.

The adjacent pages have deliberately different functions:

  • Ginkgoopsida treats ginkgo as a major class of living gymnosperms and compares it with Cycadopsida and Pinopsida.
  • Ginkgoidae explains the subclass rank and its use in alternative modern classification systems.
  • Ginkgoales covers the recognized fossil radiation, including extinct reproductive lineages and proposed fossil families.
  • Ginkgoaceae treats the sole living family and its diagnostic characteristics.
  • Ginkgo addresses genus nomenclature, fossil species assigned directly to the genus, and distinctions from fossil organ-genera.
  • Ginkgo biloba provides the detailed account of the living tree’s morphology, ecology, horticulture, uses, population history, and conservation.

Tree TSAR’s hierarchy is an explanatory scaffold rather than a claim that every possible formal rank requires equal treatment. Some widely used classifications compress the ginkgo sequence by omitting Ginkgophyta, Ginkgoopsida, or both. Tree TSAR retains the expanded sequence because each selected level can answer a distinct evolutionary or classificatory question without requiring invented placeholder clades.

Secure fossil members of Ginkgoales are included within Ginkgophyta. More uncertain plants are discussed as possible stem relatives, historical comparisons, or boundary problems rather than being presented as accepted members of the living family inventory.

3. Evolutionary History and Fossil Context

The remote evolutionary background of Ginkgophyta lies within the Devonian diversification of euphyllophytes and the origin of seed plants. Early euphyllophytes commonly bore terminal sporangia on fertile branching systems. Over time, different lineages elaborated, aggregated, or reduced these systems, while heterospory and ultimately the seed habit evolved. Secure ginkgophytes appeared much later, but their reproductive organs belong to this deeper history of modification from branched fertile structures (Bonacorsi & Leslie 2019).

Bonacorsi and Leslie (2019) compared reproductive architecture across Silurian and Devonian plants and included pollen cones of living Ginkgo biloba as modern comparative material. Their results place the compact ginkgo pollen cone within a broad euphyllophyte history in which terminal fertile branching systems were repeatedly elaborated or reduced. The comparison does not identify a Devonian ginkgophyte ancestor, but it provides useful structural context for later seed-plant reproductive evolution.

The immediate origin of Ginkgophyta remains uncertain. Fossil plants with divided or fan-shaped leaves occur in Paleozoic deposits, but leaf shape alone cannot establish a close relationship with ginkgo. Several extinct seed-plant groups independently produced leaves with forked veins or deeply divided blades, and many early fossils lack attached reproductive organs.

The Permian genus Trichopitys has frequently been interpreted as an early ginkgophyte or a close stem relative. It possessed highly divided vegetative organs and branched ovule-bearing structures that appear more elaborate than those of later Ginkgoales. Its exact placement remains unsettled, and it is better regarded as an important hypothesis-bearing fossil than as an unquestioned member of the modern order.

Naugolnykh (2007) proposed a broad Paleozoic ginkgophyte history involving several plants with foliar seed-bearing organs. Under this interpretation, early members retained ovules on comparatively leaf-like structures, and later lineages progressively reduced the laminar and branching components of the reproductive system. The hypothesis draws attention to potentially important transitional morphologies, but the included fossils and their relationships have not been accepted uniformly.

Permian fossils described by Fischer et al. (2010) provide another possible connection. The specimens combine Sphenobaiera-like leaves with structures interpreted as seeds attached to the leaf lamina. They were compared with the rare O-ha-tsuki condition of living Ginkgo biloba, in which ovules develop abnormally on leaf-like organs. The proposed attachment and evolutionary interpretation remain hypotheses, but they illustrate how rare living developmental variants may assist the interpretation of fossil structures.

The record becomes substantially more secure during the Triassic. Recognizable ginkgoalean plants diversified during the early Mesozoic and became widespread through the Jurassic and Early Cretaceous. This radiation included numerous leaf forms, differentiated shoots, pollen organs, and ovule-bearing structures. The major fossil lineages and families are treated under Ginkgoales.

Triassic seedlings also provide evidence of developmental continuity. Fossils from France preserve cotyledons, primary leaves, roots, and later foliage resembling the early development of living Ginkgo biloba. These similarities suggest that important features of ginkgoalean seedling organization were established by the Middle Triassic, even while adult plants retained far greater morphological and reproductive diversity than survives today (Bauer et al. 2013).

The fossil record also demonstrates the danger of defining Ginkgophyta from leaves alone. Fossil foliage has commonly been assigned to morphogenera such as Ginkgoites, Baiera, Sphenobaiera, and Pseudotorellia. These names describe isolated organs and do not necessarily identify the complete parent plant.

The Umaltolepis–Pseudotorellia plant is a particularly important example. Its narrow leaves had long encouraged comparison with ginkgophytes. Better-preserved seed-bearing structures later revealed umbrella-like organs enclosing several seeds and showed stronger similarities to Peltaspermales and Umkomasiales than to secure Ginkgoales. The reconstruction substantially weakened its traditional placement among ginkgophytes (Herrera et al. 2017).

Broader hypotheses have connected Ginkgoales with Peltaspermales, Czekanowskiales or Leptostrobales, Caytoniales, and other extinct seed-plant groups. Meyen (1987), for example, proposed an evolutionary sequence extending from peltasperms toward several later orders, including Ginkgoales. These models remain historically influential but should not be presented as settled modern phylogenies.

The early history of Ginkgophyta is therefore best understood as a secure order-level core surrounded by less certain stem and neighboring lineages. Reproductive structures, cuticular anatomy, wood, attached organs, and whole-plant reconstructions generally provide stronger evidence than detached foliage.

The division later underwent severe contraction. Ginkgoaleans remained diverse and geographically widespread during much of the Mesozoic, but most reproductive lineages disappeared, and the genus Ginkgo itself declined in diversity and range through the Cretaceous and Cenozoic. Only Ginkgo biloba survived into the modern flora.

This history is incompatible with the idea that ginkgophytes remained completely unchanged. The lineage experienced branching diversification, reproductive reduction, genomic evolution, extinction, demographic contraction, population differentiation, and human-mediated dispersal. The term “living fossil” is meaningful only when it refers to the survival and isolation of the living species, not to an absence of evolution.

4. Classification and Circumscription

Ginkgophyta Bessey is used here as a division-level name for the broad ginkgo lineage. Its living circumscription is simple: every extant member belongs to Ginkgoopsida, Ginkgoidae, Ginkgoales, Ginkgoaceae, Ginkgo, and Ginkgo biloba.

The fossil circumscription is considerably less secure. A narrow treatment of Ginkgophyta would include only recognizable Ginkgoales and would differ little in content from Ginkgoopsida. A very broad treatment could include numerous Paleozoic and Mesozoic seed plants based on partial resemblance or historical hypotheses. Tree TSAR adopts an intermediate core-and-context model.

The core Ginkgophyta includes Ginkgoopsida and secure members of Ginkgoales.

The stemward context includes Paleozoic plants such as Trichopitys and other foliar seed-bearing gymnosperms that may lie near the origin of Ginkgoales but cannot yet be placed with confidence.

The historical comparison zone includes Czekanowskiales, Peltaspermales, Caytoniales, corystosperms, and plants such as Umaltolepis–Pseudotorellia that have played important roles in changing interpretations of the ginkgo lineage.

This treatment is not a formal node- or stem-based phylogenetic definition. A strict total group would include every extinct plant more closely related to living Ginkgo biloba than to any other living species. The fossil evidence is not yet sufficient to place every disputed seed plant reliably under that criterion.

Modern molecular studies constrain the living endpoint but cannot determine the position of extinct groups directly. Nuclear and plastid evidence generally supports a ginkgo–cycad sister relationship, whereas some mitochondrial analyses differ. None of these results supports treating ginkgo as a conifer simply because it is a woody gymnosperm (Ran et al. 2018; Stull et al. 2021; Liu et al. 2022).

Classifications also vary in the number of formal ranks applied above Ginkgoales. Christenhusz et al. (2011) emphasized Ginkgoidae as the principal above-order unit. Yang et al. (2022) placed Ginkgoidae within Ginkgoopsida. World Flora Online retains Ginkgophyta above both. These systems express alternative rank structures around substantially the same living lineage.

Tree TSAR accepts Ginkgophyta because it is scientifically defensible, publicly recognizable, and especially useful for explaining why the outer fossil boundary of the ginkgo lineage is less certain than its modern membership.

5. Morphology, Biology, and Identification

Ginkgophytes were woody, heterosporous seed plants with secondary growth. Secure Mesozoic members commonly possessed differentiated long shoots and short shoots, although the degree of shoot specialization varied among lineages.

Leaves often had open, repeatedly forked or subparallel veins. Their shapes ranged from broad fans to narrow wedges, straps, and deeply divided systems of segments. Some had distinct petioles, while others tapered gradually toward the shoot. Similar leaves could occur in plants with substantially different reproductive structures.

Traditional foliage morphogenera include:

  • Ginkgoites for many fan-shaped or lobed leaves resembling Ginkgo;
  • Baiera for leaves divided into narrow segments;
  • Sphenobaiera for deeply divided leaves with a tapering or sessile base; and
  • Pseudotorellia for narrow, strap-like leaves historically associated with ginkgophytes.

These categories are useful for describing fossil organs, but none is automatically equivalent to a whole-plant genus or secure ginkgophyte lineage.

Cuticular anatomy can provide additional evidence. Stomatal arrangement, subsidiary cells, epidermal structure, and cuticle ultrastructure may support or weaken a proposed relationship. Reproductive organs remain especially important because different seed-bearing architectures can occur with superficially similar foliage.

Living Ginkgo biloba bears exposed ovules on reduced stalks and produces pollen cones with numerous microsporangia arranged along an axis. Earlier ginkgoaleans included branched systems with many ovules, compact terminal clusters, and other arrangements. Fossils proposed as stem ginkgophytes may have borne ovules on more leaf-like or extensively divided structures.

The motile sperm of living ginkgo is shared with cycads and represents an ancestral seed-plant feature retained by both lineages. It does not independently diagnose Ginkgophyta, but it is a major part of the division’s evolutionary significance.

Living Ginkgophyta is easy to identify because only Ginkgo biloba survives. Fossil material should be identified at the most defensible level supported by preservation. A detached fan-shaped leaf may be ginkgo-like, but secure placement may require reproductive organs, cuticles, wood, attached shoots, or repeated organic association.

6. Distribution and Ecology

Ginkgophyta had a much wider historical distribution than the living species. Possible Paleozoic records occur in several regions, although many remain uncertain. Secure Ginkgoales became widespread during the Triassic and occurred across large portions of both hemispheres during the Jurassic and Early Cretaceous.

Fossil ginkgophytes are known from Eurasia, North America, South America, Antarctica, and other former land areas. Their distribution must be interpreted through continental movement, paleolatitude, and long-term climatic change rather than compared directly with modern national boundaries.

The division occupied varied ecological settings, including temperate forests, river systems, floodplains, lake margins, and seasonally disturbed environments. Later species of Ginkgo appear to have been associated particularly with riparian and disturbance-prone habitats, but this ecology should not be projected onto every extinct lineage.

The decline of ginkgophytes probably resulted from several interacting processes rather than a single cause. Climatic change, geographic fragmentation, habitat contraction, demographic vulnerability, shifting disturbance regimes, and changing plant communities may all have contributed. The expansion of flowering plants coincided with parts of this decline, but the fossil pattern does not support a simple global replacement in which angiosperms directly eliminated every ginkgophyte.

The sole living species is native to China, although centuries of cultivation have obscured the limits of its original distribution. Population-genomic evidence identifies differentiated refugial components within China, while human cultivation subsequently spread the tree throughout temperate and subtropical regions worldwide (Zhao et al. 2019).

The ecological history of Ginkgophyta therefore extends from widespread fossil radiations through severe natural contraction to a recent global horticultural expansion created largely by people.

7. Human Uses and Cultural Importance

All modern human uses of Ginkgophyta derive from Ginkgo biloba. The species is widely cultivated as an ornamental, street tree, shade tree, memorial tree, and historic landscape plant. Its seeds have culinary uses in East Asia, and its leaves supply commercial herbal extracts.

Ginkgo has been cultivated for centuries in temple grounds, villages, gardens, and other cultural landscapes. It is associated with longevity, resilience, remembrance, scholarship, and continuity. Human protection and movement may have contributed substantially to the survival and later expansion of the lineage (Crane 2019; Zhao et al. 2019).

The scientific value of Ginkgophyta extends beyond its living uses. The lineage is important to research on:

  • Seed-plant origins and relationships;
  • Fossil whole-plant reconstruction;
  • Ovule-bearing structures;
  • Reproductive reduction;
  • Short-shoot evolution;
  • Motile sperm;
  • Gymnosperm genomics;
  • Paleoclimate reconstruction;
  • Plant–insect interactions;
  • Phylogenetic isolation; and
  • Extinction within formerly diverse lineages.

Ginkgophyta also has exceptional educational value. It demonstrates why detached fossil organs may receive separate names, why similar leaves do not always indicate close relationship, why formal ranks vary among classifications, and why a species may be globally familiar yet represent the last survivor of an otherwise extinct evolutionary radiation.

Detailed treatment of ginkgo horticulture, cultivars, edible seeds, medicinal products, toxicology, and urban forestry is provided on the Ginkgo biloba page.

8. Conservation Significance

The entire living diversity of Ginkgophyta is concentrated in Ginkgo biloba. Extinction of this single species would eliminate the last living genus, family, order, subclass, class, and division of the ginkgo lineage.

The species is widely cultivated and is unlikely to disappear globally in the immediate future. Horticultural abundance, however, does not automatically protect the genetic structure, provenance, natural regeneration, or ecological associations of relict populations.

Population-genomic research has identified several ancient genetic components and major refugial regions within China. Conservation therefore requires representation of differentiated source populations rather than reliance on a small number of widely propagated ornamental clones (Zhao et al. 2019).

In situ conservation protects natural recruitment, local adaptation, demographic structure, soils, associated organisms, and responses to environmental change. Ex situ conservation in botanical gardens, arboreta, historic landscapes, seed orchards, and living collections can supplement this work when provenance and genetic diversity are documented.

The fossil record also requires protection. Rare attached reproductive structures, seedlings, cuticles, wood, and whole-plant associations preserve information about extinct branches that cannot be recovered from isolated leaves alone. Loss of fossil sites or stratigraphic context permanently limits understanding of the division’s origin and circumscription.

Ginkgophyta therefore presents an unusual conservation paradox: its sole living species is globally familiar and horticulturally abundant, while its natural genetic diversity is restricted and nearly all of the division’s evolutionary radiation is already extinct.

9. Major Included Groups

Ginkgoopsida Engl.

Ginkgoopsida is the sole living class and the immediately narrower Tree TSAR unit. It represents the coherent class-level ginkgo lineage and provides the principal comparison with Cycadopsida and Pinopsida.

Ginkgoidae Engl.

Ginkgoidae is the sole living subclass. It is retained in several influential classifications and links the class Ginkgoopsida with the order Ginkgoales.

Ginkgoales Gorozh.

Ginkgoales is the secure order-level core of the division. It contains the established Mesozoic radiation, its extinct reproductive lineages, and the surviving family Ginkgoaceae.

Ginkgoaceae Engl.

Ginkgoaceae is the only living family. It contains one accepted living genus and species and preserves the distinctive morphology of the surviving lineage.

Ginkgo L.

Ginkgo is the sole living genus. Fossil species assigned directly to it document changes in leaf and reproductive morphology from the Jurassic through the Cenozoic.

Ginkgo biloba L.

Ginkgo biloba is the only living species and the sole source of the division’s modern ecological, horticultural, agricultural, cultural, and medicinal importance.

Possible stem ginkgophytes

Trichopitys and several Paleozoic foliar seed-bearing plants have been proposed as early ginkgophytes or close relatives. Their exact positions remain uncertain.

Historically associated seed-plant lineages

Czekanowskiales, Peltaspermales, Caytoniales, corystosperms, and the Umaltolepis–Pseudotorellia plant have influenced hypotheses about ginkgophyte origins or boundaries. They are not all accepted as members of the core division.

10. Similar, Overlapping, or Historically Confused Groups

Ginkgoopsida Engl.

Ginkgoopsida is sometimes used as the highest formal name for approximately the same lineage. Tree TSAR distinguishes it as the class-level core within the broader division Ginkgophyta.

Ginkgoales Gorozh.

Ginkgoales is narrower and more securely delimited. A fossil may be relevant to ginkgophyte origins without being a demonstrated member of the order.

Czekanowskiales or Leptostrobales

These Mesozoic seed plants had narrow leaves, short shoots, and distinctive reproductive structures. They have often been compared with ginkgophytes but are generally retained as a separate order.

Peltaspermales

Peltaspermales were extinct seed plants with peltate seed-bearing structures. They have figured prominently in some hypotheses of ginkgophyte origins, but a direct ancestral relationship has not been established.

Caytoniales

Caytoniales bore reproductive structures that partially enclosed their ovules. They have been linked with ginkgophytes in broad evolutionary models but are generally treated as a separate lineage.

Corystosperms or Umkomasiales

The reconstructed reproductive structures of Umaltolepis resemble those of corystosperms and peltasperms, weakening its traditional classification as a ginkgophyte.

Dicranophyllales

Dicranophyllales were Paleozoic seed plants with forked leaves. Their superficial resemblance to some proposed ginkgophytes does not establish inclusion in Ginkgophyta.

Seed ferns

“Seed ferns” or pteridosperms comprise several extinct seed-plant lineages rather than one simple natural group. Some proposed relatives of ginkgophytes have historically been included under this broad term.

Ginkgo-like foliage

Ginkgoites, Baiera, Sphenobaiera, and Pseudotorellia are fossil organ- or morphogenera. They should not automatically be interpreted as complete biological genera or secure members of Ginkgoales.

Cycads

Cycads are the closest living relatives of ginkgo under the best-supported current phylogenomic hypothesis. They belong to their own lineage and are not included within Ginkgophyta.

Conifers

Ginkgo is sometimes called a conifer informally because it is a woody gymnosperm. Ginkgophyta is separate from the conifer lineage and differs in phylogenetic position, leaves, reproductive structures, and sperm biology.

Living fossil

“Living fossil” is an informal description rather than a formal taxon. It conveys the isolation and deep fossil continuity of Ginkgo biloba but should not imply evolutionary, ecological, or genomic stasis.

11. Additional Information

12. References and Further Reading

Bauer K, Grauvogel-Stamm L, Kustatscher E, Krings M (2013) Fossil ginkgophyte seedlings from the Triassic of France resemble modern Ginkgo biloba. BMC Evolutionary Biology 13: 177. https://doi.org/10.1186/1471-2148-13-177

Bessey CE (1907) A synopsis of plant phyla. University Studies of the University of Nebraska 7(4): 275–373. https://www.biodiversitylibrary.org/page/29885275

Bonacorsi NK, Leslie AB (2019) Sporangium position, branching architecture, and the evolution of reproductive morphology in Devonian plants. International Journal of Plant Sciences 180(6): 493–503. https://doi.org/10.1086/702938

Christenhusz MJM, Reveal JL, Farjon A, Gardner MF, Mill RR, Chase MW (2011) A new classification and linear sequence of extant gymnosperms. Phytotaxa 19(1): 55–70. https://doi.org/10.11646/phytotaxa.19.1.3

Crane PR (2019) An evolutionary and cultural biography of ginkgo. Plants, People, Planet 1(1): 32–37. https://doi.org/10.1002/ppp3.7

Fischer TC, Meller B, Kustatscher E, Butzmann R (2010) Permian ginkgophyte fossils from the Dolomites resemble extant O-ha-tsuki aberrant leaf-like fructifications of Ginkgo biloba L. BMC Evolutionary Biology 10: 337. https://doi.org/10.1186/1471-2148-10-337

Herrera F, Shi G, Ichinnorov N, Takahashi M, Bugdaeva EV, Herendeen PS, Crane PR (2017) The presumed ginkgophyte Umaltolepis has seed-bearing structures resembling those of Peltaspermales and Umkomasiales. Proceedings of the National Academy of Sciences of the United States of America 114(12): E2385–E2391. https://doi.org/10.1073/pnas.1621409114

Liu Y, Wang S, Li L, Yang T, Dong S, Wei T, Wu S, Liu Y, Gong Y, Feng X, et al. (2022) The Cycas genome and the early evolution of seed plants. Nature Plants 8(4): 389–401. https://doi.org/10.1038/s41477-022-01129-7

Meyen SV (1987) Evolution of Ginkgoopsida: From Peltaspermales to Ginkgoales, Leptostrobales and Caytoniales. Bulletin de la Société Botanique de France. Actualités Botaniques 134(2): 67–76. https://doi.org/10.1080/01811789.1987.10826864

Naugolnykh SV (2007) Foliar seed-bearing organs of Paleozoic ginkgophytes and the early evolution of the Ginkgoales. Paleontological Journal 41(8): 815–859. https://doi.org/10.1134/S0031030107080011

Ran JH, Shen TT, Wang MM, Wang XQ (2018) Phylogenomics resolves the deep phylogeny of seed plants and indicates partial convergent or homoplastic evolution between Gnetales and angiosperms. Proceedings of the Royal Society B: Biological Sciences 285(1881): 20181012. https://doi.org/10.1098/rspb.2018.1012

Stull GW, Qu XJ, Parins-Fukuchi C, Yang YY, Yang JB, Yang ZY, Hu Y, Ma H, Soltis PS, Soltis DE, et al. (2021) Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms. Nature Plants 7(8): 1015–1025. https://doi.org/10.1038/s41477-021-00964-4

World Flora Online (2026) Ginkgophyta Bessey. World Flora Online Consortium. https://www.worldfloraonline.org/taxon/wfo-4100003332

Yang Y, Ferguson DK, Liu B, Mao KS, Gao LM, Zhang SZ, Wan T, Rushforth K, Zhang ZX (2022) Recent advances on phylogenomics of gymnosperms and a new classification. Plant Diversity 44(4): 340–350. https://doi.org/10.1016/j.pld.2022.05.003

Zhao YP, Fan G, Yin PP, Sun S, Li N, Hong X, Hu G, Zhang H, Zhang FM, Han JD, et al. (2019) Resequencing 545 ginkgo genomes across the world reveals the evolutionary history of the living fossil. Nature Communications 10: 4201. https://doi.org/10.1038/s41467-019-12133-5

Zhou ZY (2009) An overview of fossil Ginkgoales. Palaeoworld 18(1): 1–22. https://doi.org/10.1016/j.palwor.2009.01.001