Credneria

Credneria
Temporal range: Cretaceous
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Eudicots
Clade:Rosids
Order:Malpighiales
Family:Salicaceae
Genus:†Credneria
Zenker

Credneria (Zenker 1833) is an extinct genus in the family Salicaceae[1] or Platanaceae[2][3] of broad-leaf trees similar to extinct Platanus species that appeared during the Cretaceous. Its foliage is preserved in sandstone and less often in siltstone. The leaves are typically obovate with a pinnate-actinodromous venation and distinct suprabasal veins.[4]

Fossil Credneria triacuminata leaf in the Botanischer Garten Dresden

Species

Known species are:[5][1][6][7]

  • Crednetia triacuminata (Hampe),[8] the first broad-leafed tree known
  • Crednetia basinervosa (Hollick) [9]
  • Crednetia cuneifolia
  • Crednetia bohemica
  • Crednetia subserrata (Hampe)
  • Crednetia denticulata [10]
  • Crednetia subtriloba
  • Crednetia integerrima
  • Crednetia biloba
  • Crednetia comparabilis [11]
  • Crednetia daturaefolia (Ward) [12]
  • Crednetia elegans [13]
  • Crednetia grewiopsoides [14]
  • Crednetia inordinata
  • Crednetia intermedia
  • Crednetia longifolia
  • Crednetia mixta
  • Crednetia pachyphylla
  • Crednetia parva
  • Crednetia prophylloides (Knowlton)
  • Crednetia pulchra
  • Crednetia spatiosa
  • Crednetia sudanense

References

  1. 1 2 https://www.gbif.org/species/8184418
  2. ↑ Thomas Denk & Maria V. Tekleva (2006). "Comparative pollen morphology and ultrastructure of Platanus: Implications for phylogeny and evaluation of the fossil record". Grana. 45:3: 195–221. doi:10.1080/00173130600873901.
  3. ↑ Collinson, Margaret E (1992). "The early fossil history of Salicaceae: a brief review". Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences. Cambridge Univ Press. 98: 155–167. doi:10.1017/S0269727000007521.
  4. ↑ Georg F. Tschana; Thomas Denka; Maria von Balthazara (2008). "Credneria and Platanus (Platanaceae) from the Late Cretaceous (Santonian) of Quedlinburg, Germany". doi:10.1016/j.revpalbo.2008.05.004.
  5. ↑ Halamski, A.T. (2013). "Latest Cretaceous leaf floras from southern Poland and western Ukraine" (PDF). Acta Palaeontologica Polonica. 58 (2): 407–443.
  6. ↑ P. B. Richter (1905). Über die Kreidepflanzen der Umgebung Quedlinburgs (PDF).
  7. ↑ Knobloch E. (1997). ""Credneria" bohemica Velenovský – eine altertümliche Platane". Palaeontographica, Ser. B. 1242: 127–148.
  8. ↑ https://www.yooniqimages.com/images/detail/102268426/Creative/a-fossil-leaf-of-credneria-triacuminata-large-leaves-are-indicative-of-humid-tropical-climates-this-specimen-is-approximately-17cms-wide-it-was-found-in-heidelberg-germany-and-dates-back-to-the-late-cretaceous
  9. ↑ https://www.gbif.org/species/9103550
  10. ↑ https://www.gbif.org/species/4924339
  11. ↑ https://www.gbif.org/species/8912373
  12. ↑ https://www.gbif.org/species/9183213
  13. ↑ https://www.gbif.org/species/9004063
  14. ↑ https://www.gbif.org/species/8800809
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