Sapindopsis
{{Short description|Extinct genus of leaf fossils}}
{{Automatic taxobox
| fossil_range = {{fossilrange|Early Cretaceous|Late Cretaceous|latest=100}}
| image = Sapindopsis NMNH.jpg
| image_caption = Sapindopsis fossil, National Museum of Natural History
| taxon = Sapindopsis
| authority = (Fontaine) Dilcher and Basson 1990{{Cite journal|title=mid Cretaceous angiosperm leaves from a new locality in Lebanon|author1=Dilcher, D.L.|author2=Basson, P.W.|journal=Botanical Gazette|year=1990|volume=151|pages=538–547|doi=10.1086/337855|s2cid=84242346}}
| type_species = †Sapindopsis magnifolia
| type_species_authority = Fontaine, 1889
| subdivision_ranks = Species
| subdivision = *See text
}}
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:
- Sapindopsis acuta {{small|(Heer) Budantsev, 1983}}{{cite book |last1=Budantsev |first1=L. Y. |year=1983 |title=History of the Arctic flora of the Early Cainozoic |publisher=Izdatel'stvo "Nauka", Leningradskoe otdelenie |place=Leningrad}} - Albian–Coniacian; Atane Formation; Isunguak & Asuk, Greenland
- Sapindopsis angusta {{small|(Heer) Seward & Conway, 1935}} {{cite journal |last1=Seward |first1=A.C. |last2=Conway |first2=V.M. |year=1935 |title=Additional Cretaceous plants from Western Greenland |journal=Kongliga Svenska Vetenskaps Academiens Handlingar |volume=15 |issue=3 |pages=1–41}} - Albian–Coniacian; Atane Formation; Isunguak & Asuk, Greenland
- Sapindopsis anhouryi {{small|Dilcher & Basson 1990}} - Cenomanian; Sannine Formation; Namoura, Lebanon.
- Sapindopsis asiaticus {{small|Golovneva & Sun 2022}}{{Cite journal |last1=Golovneva |first1=Lina B. |last2=Volynets |first2=Elena B. |last3=Zolina |first3=Anastasia A. |last4=Sun |first4=Yuewu |date=2022-10-11 |title=New species of Sapindopsis Fontaine (Platanaceae) from the mid-Cretaceous of northeastern Asia and their paleogeographical and evolutionary implications |url=https://www.sciencedirect.com/science/article/pii/S0195667122002555 |journal=Cretaceous Research |volume=142 |language=en |pages=105391 |doi=10.1016/j.cretres.2022.105391 |s2cid=252861479 |issn=0195-6671|url-access=subscription }} - Late Albian - Early Turonian; Krivorechenskaya Formation; Russia.
- Sapindopsis brevifolia {{small|Fontaine, 1889}}{{cite report |last1=Fontaine |first1=W. |year=1889 |title=The Potomac or younger Mesozoic flora |series=Monographs |publisher=United States Geological Survey |volume=15 |pages=1–377 |doi=10.3133/m15|url=https://www.biodiversitylibrary.org/itempdf/81619 }} - Barremian, Potomac Group, Virginia, USA
- Sapindopsis chinensis {{small|Golovneva & Sun 2022}} - Late Albian Dalazi Formation; China & Alchan Formation; Russia
- Sapindopsis magnifolia {{small|(Fontaine) Dilcher & Basson 1990}} (type) Barremian, Potomac Group, Virginia, USA
- Sapindopsis orientalis {{small|Golovneva & Sun 2022}} - Frentsevka Formation of Russia.
- Sapindopsis powelliana {{small|(Lesquereux) Wang & Dilcher 2018}}{{Cite journal|title=Early Cretaceous angiosperm leaves from the Dakota Formation, Hoisington III locality, Kansas, USA|author1=Wang, H.-S.|author2=Dilcher, D.L.|journal=Palaeontologia Electronica|year=2018|volume=31.3.34A|pages=1–49|doi=10.26879/841|url=https://palaeo-electronica.org/content/pdfs/841.pdf|accessdate=2018-11-25|doi-access=free}} - Cenomanian; Dakota Formation; Kansas, USA.
- Distefananthus hoisingtonensis (Huegele & Wang, 2022) may be the inflorescence of this species.{{Cite journal |last1=Huegele |first1=Indah B. |last2=Wang |first2=Hongshan |date=2023-02-01 |title=An unusual plane tree from the Early Cretaceous of Kansas, USA |journal=Review of Palaeobotany and Palynology |volume=309 |pages=104815 |doi=10.1016/j.revpalbo.2022.104815 |doi-access=free |bibcode=2023RPaPa.30904815H |s2cid=254090176 |issn=0034-6667 |language=en }}
- Sapindopsis retallackii {{small|Wang & Dilcher 2018}} - Cenomanian Dakota Formation; Kansas, USA
- Sapindopsis variabilis {{small| Fontaine 1889}} - Barremian Patapsco Formation; Virginia, USA