Sapindopsis Powelliana
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''Sapindopsis'' ("''Sapindus''-like") is an extinct
form genus Form classification is the classification of organisms based on their morphology, which does not necessarily reflect their biological relationships. Form classification, generally restricted to palaeontology, reflects uncertainty; the goal of sc ...
for leaves of the
Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
Period Period may refer to: Common uses * Period (punctuation) * Era, a length or span of time *Menstruation, commonly referred to as a "period" Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (o ...
, originally considered similar to soapberry. Associated reproductive structures now suggest it was more closely related to planes and sycamores of the family
Platanaceae Platanaceae, the plane family, is a family (biology), family of flowering plants in the order Proteales. The family consists of only a single extant taxon, extant genus ''Platanus'', with twelve known species. The plants are tall trees, native ...
.


Description

In the form generic system of
paleobotany Paleobotany or palaeobotany, also known as paleophytology, is the branch of botany dealing with the recovery and identification of plant fossils from geological contexts, and their use for the biological reconstruction of past environments ( pal ...
''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'' - Albian–Coniacian; Atane Formation; Isunguak & Asuk, Greenland *''Sapindopsis angusta'' - Albian–Coniacian; Atane Formation; Isunguak & Asuk, Greenland *''Sapindopsis anhouryi'' -
Cenomanian The Cenomanian is, in the International Commission on Stratigraphy's (ICS) geological timescale, the oldest or earliest age (geology), age of the Late Cretaceous epoch (geology), Epoch or the lowest stage (stratigraphy), stage of the Upper Cretace ...
;
Sannine Formation The Sannine Formation, also called the Sannine Limestone, is a Cretaceous geologic formation in Lebanon. It is a Konservat-Lagerstätte that contains a high diversity of well-preserved fish, reptiles, and invertebrates from the Tethys Ocean wit ...
; Namoura, Lebanon. *''Sapindopsis asiaticus'' - Late
Albian The Albian is both an age (geology), age of the geologic timescale and a stage (stratigraphy), stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early Cretaceous, Early/Lower Cretaceous epoch (geology), Epoch/s ...
- Early
Turonian The Turonian is, in the International Commission on Stratigraphy, ICS' geologic timescale, the second age (geology), age in the Late Cretaceous epoch (geology), Epoch, or a stage (stratigraphy), stage in the Upper Cretaceous series (stratigraphy), ...
; Krivorechenskaya Formation; Russia. *''Sapindopsis brevifolia'' -
Barremian The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 125.77 Ma (million years ago) and 121.4 ± 1.0 Ma (Historically, this stage was placed at 129.4 million to approximately 125 million years ago) It is a ...
, Potomac Group, Virginia, USA *''Sapindopsis chinensis'' - Late Albian Dalazi Formation; China & Alchan Formation; Russia *''Sapindopsis magnifolia'' (
type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * ...
)
Barremian The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 125.77 Ma (million years ago) and 121.4 ± 1.0 Ma (Historically, this stage was placed at 129.4 million to approximately 125 million years ago) It is a ...
, Potomac Group, Virginia, USA *''Sapindopsis orientalis'' - Frentsevka Formation of Russia. *''Sapindopsis powelliana'' - Cenomanian;
Dakota Formation The Dakota is a sedimentary rock, sedimentary geologic unit name of Formation (stratigraphy), formation and Group (stratigraphy), group rank in Midwestern North America. The Dakota units are generally composed of sandstones, mudstones, clays, and ...
; Kansas, USA. **'' Distefananthus hoisingtonensis'' (Huegele & Wang, 2022) may be the
inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...
of this species. *''Sapindopsis retallackii'' - Cenomanian
Dakota Formation The Dakota is a sedimentary rock, sedimentary geologic unit name of Formation (stratigraphy), formation and Group (stratigraphy), group rank in Midwestern North America. The Dakota units are generally composed of sandstones, mudstones, clays, and ...
; Kansas, USA *''Sapindopsis variabilis'' - Barremian
Patapsco Formation The Patapsco Formation is a geologic formation of varigated clays, sandy clays, and sand in Virginia, the District of Columbia, Maryland, Delaware, Pennsylvania, and in the subsurface of New Jersey. It preserves fossils such as plants and mollusc ...
; Virginia, USA


References

{{Taxonbar, from=Q59192208 Cretaceous plants Prehistoric angiosperm genera Platanaceae