Lycostrobus chinleanus Daugherty

Plant Fossil Names Registry Number: PFN003560

Act LSID: urn:lsid:plantfossilnames.org:act:3560

Rank: species

Reference for this name: Daugherty, L. H. (1941): The Upper Triassic flora of Arizona. Publications of the Carnegie Institution of Washington: 1–108., link

Page of description: 63

Illustrations or figures: pl. 12 (1, 2)

Name is type for

Equicalastrobus Grauvogel-Stamm et Ash 1999

Other combinations

Equicalastrobus chinleana (Daugherty) Grauvogel-Stamm et Ash 1999

Types

Holotype UCMP 1563, University of California Museum of Paleontology, Berkeley, USA
Figures: pl. 12 (1, 2)

Original diagnosis/description

The strobilus appears to have been originally cylindrical in shape, but is now much flattened. The upper portion is missing. The width in the present condition is 3.5 cm. It is characterized by deciduous, antrorsely induplicate spines 3 cm. in length, 2 mm. in width, and slightly constricted at the base. The peltate tip of the scale is attached to a four-angled stalk which holds the sporangia. If the spine is missing from the peltate tip, a semicircular notch is present in the upper margin. Oval seedlike bodies near the base of the strobilus are believed to represent megasporangia.

Stratigraphy

Triassic, Middle Triassic, Ladinian
Chinle Formation

Locality

United States
Blue Forest, Petrified Forest National Park, Arizona, USA

Plant fossil remain

macro- and meso-fossils-embryophytes except wood - monilophyte

Comments

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