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Cyrtonotreta depressa Cooper 1956 (lamp shell)

Lingulata - Acrotretida - Acrotretidae

PaleoDB taxon number: 329982

Alternative combination: Conotreta depressa

Full reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245

Belongs to Cyrtonotreta according to J. Hansen and L. E. Holmer 2011

Sister taxa: Cyrtonotreta profilbekkiensis, Cyrtonotreta spinosa, Cyrtonotreta striata, Cyrtonotreta vasculata, Cyrtonotreta vestrogothica

Type specimen: USNM 1168156e, a valve (pedicle valve). Its type locality is 0.2 miles southeast of Pratt Ferry, which is in a Chazy open shallow subtidal limestone in the Pratt Ferry Formation of Alabama.

Ecology: stationary epifaunal suspension feeder