Sapindopsis Explained

Sapindopsis ("Sapindus-like") is an extinct form genus for leaves of the Cretaceous Period, originally considered similar to soapberry. Associated reproductive structures now suggest it was more closely related to planes and sycamores of the family Platanaceae.

Description

In the form generic system of paleobotany Sapindopsis is used only for leaves, which are compound with three to six leaflets. Leaflets vary in distinctness or confluence with the midrib. The venation is pinnate, eucamptodromous to brochidodromus, with percurrent tertiary veins.

Distribution and species

Sapindopsis was geographically widespread from Asia to North America. Species include:

Notes and References

  1. Book: Budantsev . L. Y. . 1983 . History of the Arctic flora of the Early Cainozoic . Izdatel'stvo "Nauka", Leningradskoe otdelenie . Leningrad.
  2. Seward . A.C. . Conway . V.M. . 1935 . Additional Cretaceous plants from Western Greenland . Kongliga Svenska Vetenskaps Academiens Handlingar . 15 . 3 . 1–41.
  3. Golovneva . Lina B. . Volynets . Elena B. . Zolina . Anastasia A. . Sun . Yuewu . 2022-10-11 . New species of Sapindopsis Fontaine (Platanaceae) from the mid-Cretaceous of northeastern Asia and their paleogeographical and evolutionary implications . Cretaceous Research . 142 . en . 105391 . 10.1016/j.cretres.2022.105391 . 252861479 . 0195-6671. subscription .
  4. Fontaine . W. . 1889 . The Potomac or younger Mesozoic flora . Monographs . United States Geological Survey . 15 . 1–377 . 10.3133/m15.
  5. Early Cretaceous angiosperm leaves from the Dakota Formation, Hoisington III locality, Kansas, USA. Wang, H.-S.. Dilcher, D.L.. Palaeontologia Electronica. 2018. 31.3.34A. 1–49. 10.26879/841. 2018-11-25. free.
  6. Huegele . Indah B. . Wang . Hongshan . 2023-02-01 . An unusual plane tree from the Early Cretaceous of Kansas, USA . Review of Palaeobotany and Palynology . 309 . 104815 . 10.1016/j.revpalbo.2022.104815 . free . 2023RPaPa.30904815H . 254090176 . 0034-6667 . en .