Cordaites Gymnosperm Fossil Leaves from Oklahoma

Cordaites sp

Division Coniferophyta, Class Pinopsida, Order Cordaitales

Geological Time : Pennsylvanian

Size (25.4 mm = 1 inch): Cardboard mounting is 170 by 82 mm

Fossil Site: Porter, Oklahoma

Code: ZPL104

Price: $65.00

Cordaites Gymnosperm Fossil Description: The Cordaites were important genus of now extinct gymnosperms, a group of plants producing seedsCordaites that unite conifers, cycads, and ginkgos. The fossil record shows their appearance was in the Pennsylvanian period.

This cordaites fossil comes from a very old collection, some 50 to 60 years old, the plant fossil collection of a man and wife who combed more than 100 plant fossil sites, almost all west of the Mississippi River. No doubt, some of these sites have been subsumed by strip malls, and urban sprawl, or are otherwise no longer open to collecting. There was no Internet for these collectors to research their treasures, so many remain unidentified. As is apparent, this one was mounted the old fashion way; I've left it as is.

The Cordaitales are the order of plants that may have been early conifers, or alternately, the ancestor of the conifers (Pinophyta), ginkgos (Ginkgophyta) and cycads (Cycadophyta). Cordaitales persisted through the Permian, meeting extinction in the end-Ordovician extinction event.

Also see a Neuropteris scheuchzeri seed fern from the same Porter, Oklahoma site.

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