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Pseudodechenella rowi (Pillet, 1972)

Pseudodechenella rowi
Pseudodechenella rowi

Scientific Classification

Kingdom: Animalia
Phylum: Arthropoda
Class: Trilobita
Order: Proetida
Family: Proetidae
Genus: Pseudodechenella
Species: Pseudodechenella rowi (Pillet, 1972)

Information

Geological Range

Middle Devonian

Paleogeographic Distribution

New York

Michigan

Pennsylvania

Stratigraphic Occurrences

Tully Formation
Mahantango Formation
Frame Member
Ludlowville Formation
Wanakah Member
Centerfield Member
Skaneateles Formation
Stafford Member

References

Pillet (1972): Les trilobites du Devonien inferieur et du Devonien moyen du Sud-Est du Massif armorica in Societe d’etudes scientifiques de l’Anjou.

Lieberman (1994): Evolution of the trilobite subfamily Proetinae Salter, 1864, and the origin, diversification, evolutionary affinity, and extinction of the Middle Devonian proetid fauna of eastern North America. in Bulletin of the American Museum of Natural History 223: pp. 95, 96.

Adrain (1997): Proetid trilobites from the Silurian (Wenlock-Ludlow) of the Cape Phillips Formation, Canadian Arctic Archipelago. Palaeontographia Italica 84: pp. 21-111.

Cronier and Hosgor (2022): A preliminary account on Devonian trilobites from Arabian Plate, SE Turkey. Turkish Journal of Earth Sciences: pp.467-479.

Remarks

From Lieberman (1994): “Intraoccipital lobes separated from LO, topographically elevated and bulging beyond lateral margins of glabella; furrow in front of eye deep; median glabellar impressions anterior of SI developed as long lineaments running into S 1; faint furrow separates series of latitudinal striations on anterior end of cephalic border into two ridges; anterior brim of cephalon flattened ledge; anterolateral portion of LO anterior of lateral occipital lobes flexes strongly anteriorly; anterior branches of facial sutures parallel each other; 12 pygidial axial rings; posterior portion of pygidium notched in posterior view; tubercles on pygidium absent; pygidial axis with rounded terminus; interpleural furrows faint.”

From Cronier and Hosgor (2022): “…Lieberman’s (1994) generic concept of Basidechenella was rejected by Adrain (1997) mainly because Lieberman (1994) completely overlooked Pillet’s (1972) proposal of Pseudodechenella. Indeed, Pillet (1972) erected Pseudodechenella with the New York State species rowi as type. Pseudodechenella encompasses many Devonian species hitherto generally placed in the genus Basidechenella including the many Eastern North American species assigned by Lieberman (1994) to Basidechenella.”

Online Resources

Paleobiology Database.

Media

Images

Photograph of fossil of Pseudodechenella rowi (PRI 83454).
Pseudodechenella rowi (PRI 83454).
Photograph of fossil of Pseudodechenella rowi (PRI 83454).
Pseudodechenella rowi (PRI 83454).

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