Leptocycas/Pekin Formation (Triassic of the United States)

Where: Chatham County, North Carolina (35.5° N, 79.4° W: paleocoordinates 0.5° N, 17.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Pekin Formation (Chatham Group), Carnian (237.0 - 228.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; shale

Size class: macrofossils

Preservation: adpression

Collection methods: mechanical,

• subcollection of Hope and Patterson (1969) renaming of some fossils

Primary reference: T. Delevoryas and R. C. Hope. 1971. A new Triassic cycad and its phyletic implications. Postilla (150)1-21 [A. Rees/D. Sunderlin/D. Sunderlin]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24554: authorized by Allister Rees, entered by Dave Sunderlin on 09.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Cycadopsida
 Cycadales - Nilssoniaceae
Pseudoctenis sp. Seward 1911 cycads
 Cycadales - Cycadaceae
Leptocycas gracilis n. gen. n. sp.
Leptocycas gracilis n. gen. n. sp. Delevoryas and Hope 1971 cycads