Platycrinites

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Platycrinites
Temporal range: Devonian–Permian
Platycrinitidae - Platycrinites hemisphaericus.JPG
Fossil specimens of Platycrinites hemisphaericus from United States, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Echinodermata
Class: Crinoidea
Family:† Platycrinitidae
Genus:† Platycrinites
Miller 1821

Platycrinites are an extinct genus of Paleozoic stalked crinoids belonging to the family Platycrinitidae. [2]

Contents

These stationary upper-level epifaunal suspension feeders lived during the Devonian, Permian and the Carboniferous periods, from 376.1 to 259.0 Ma. [1]

Species

Platycrinites hemisphaericus. Early Carboniferous, Muldraugh Formation, Indiana. At the Royal Tyrrell Museum of Palaeontology. Platycrinites hemisphericus (TMP 1983.008.0003), Royal Tyrrell Museum, Drumheller, Alberta, 2025-07-13.jpg
Platycrinites hemisphaericus. Early Carboniferous, Muldraugh Formation, Indiana. At the Royal Tyrrell Museum of Palaeontology.

Description

These moderate sized extinct crinoids had a columnar stem with a twisted pattern. [3] On top of the stem was a calyx with a number of feather-like arms.

Distribution

Fossils of this genus have been found in the Devonian of Germany, in the Carboniferous of Australia, Canada, China, Ireland, United Kingdom, United States. As well as in the Permian of Australia, Canada, Indonesia, Oman and United States. [1]

References


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