Sapindopsis

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.[2]

Sapindopsis
Temporal range: Early Cretaceous–Late Cretaceous
Sapindopsis magnifolia from the Potomac Group near Brooke, Virginia, U.S.A.
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Platanaceae
Genus: †Sapindopsis
(Fontaine) Dilcher and Basson 1990[1]
Type species
†Sapindopsis magnifolia
Fontaine, 1889
Species
  • †Sapindopsis magnifolia (Fontaine) Dilcher and Basson 1990[1](type)
  • †Sapindopsis anhouryi Dilcher and Basson 1990[1]
  • †Sapindopsis powelliana (Lesquereux) Wang and Dilcher 2018[2]
  • †Sapindopsis retallackii Wang and Dilcher 2018[1]
  • †Sapindopsis variabilis Fontaine 1889

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 magnifolia (Fontaine) Dilcher and Basson 1990[1] (type), from the Potomac Group, Early Cretaceous (Barremian) of Virginia, USA
  • †Sapindopsis anhouryi Dilcher and Basson 1990,[1] from the Sannine Formation, mid-Cretaceous (Cenomanian) of Namoura, Lebanon.
  • †Sapindopsis powelliana (Lesquereux) Wang and Dilcher 2018,[2] from the Dakota Formation, mid-Cretaceous (Cenomanian) of Kansas, USA
  • †Sapindopsis retallackii Wang and Dilcher 2018,[2] from the Dakota Formation, mid-Cretaceous (Cenomanian) of Kansas, USA
  • †Sapindopsis variabilis Fontaine 1889, from the Patapsco Formation, Early Cretaceous (Barremian) of Virginia, USA

References
  1. Dilcher, D.L.; Basson, P.W. (1990). "mid Cretaceous angiosperm leaves from a new locality in Lebanon". Botanical Gazette. 151: 538–547. doi:10.1086/337855.
  2. Wang, H.-S.; Dilcher, D.L. (2018). "Early Cretaceous angiosperm leaves from the Dakota Formation, Hoisington III locality, Kansas, USA" (PDF). Palaeontologia Electronica. 31.3.34A: 1–49. doi:10.26879/841. Retrieved 2018-11-25.
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