Tinsleya, a new genus of seed-bearing callipterid plants from the Permian of north-central Texas
Year: 1966
Type: report
Abstract: Tinsleya texana, n. gen.and sp., is described on the basis of a large suite of plant fossils from the upper part of the Lueders Limestone of the Wichita Group (Lower Permian) near Lake Kemp in Baylor County, Tex.In general aspect, Tinsleya is similar to the genus Callipteris but differs in details of venation and polymorphism of the frond.Tinsleya is further unique in having seeds attached either apically or marginally on a few pinnules.This occurrence is the first known of seeds of any member of the Oallipterideae and establishes the group as truly pteridospermous.This type of fruiting habit may eventually lend important fossil support to the classical theory of derivation of the angiospermous carpel.
Source: USGS professional paper
DOI: 10.3133/pp523e
Author: Sergius H. Mamay
Language: English
Domain: Life Sciences
Open Access status: bronze
Funder: U.S. Geological Survey
OpenAlex ID: W101181760