Preserved in the middle Eocene sediments of north-central Oregon, this extinct conifer provides valuable insights into ancient forest ecosystems. It is a member of the yew family, Taxaceae, and was first described from fossilized seeds embedded in chert. The species is named after the Clarno Formation, where its type specimens were discovered.
The geologic setting of the Clarno nut beds reflects a complex ancient environment. These beds consist of sandstones, siltstones, and conglomerates cemented by silica and calcium carbonate. They preserve a prehistoric delta or flood zone characterized by volcanic mudflows and hot spring activity.
The fossilized seeds of Torreya clarnensis exhibit a distinct fusiform shape with a bilaterally symmetrical structure. They feature a pointed tip and base, with overall dimensions ranging from 19.5 to 20.8 millimeters in length.
Key morphological features identified on the specimens include:
The history of this species is linked to several notable discoveries and collectors:
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