Prototreta flabellata

Prototreta flabellata; Temporal range: Middle Cambrian, 540–490 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Brachiopoda
Genus:	Protreta
Species:	P. flabellata
Binomial name
	Protreta flabellata;

Prototreta flabellata is one of several species of brachiopod that occur in the Cambrian rocks of central and southern Montana, Nixon Gulch section, Three Forks Quad.[1] It is associated with the trilobite genus Ehmania near the base of the Middle Cambrian Meagher limestone.[2]

References

Xian-Guang, Hou; Siveter, David J.; Siveter, Derek J.; Aldridge, Richard J.; Pei-Yun, Cong; Gabbott, Sarah E.; Xiao-Ya, Ma; Purnell, Mark A.; Williams, Mark (2017-03-08). The Cambrian fossils of Chengjiang, China : the flowering of early animal life. Hou, Xianguang. (Second ed.). Chichester, West Sussex. ISBN 9781118896310. OCLC 970396735.
Bell, W. Charles (1941). "Cambrian Brachiopoda from Montana". Journal of Paleontology. 15 (3): 193–255. JSTOR 1298891.

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[1] Xian-Guang, Hou; Siveter, David J.; Siveter, Derek J.; Aldridge, Richard J.; Pei-Yun, Cong; Gabbott, Sarah E.; Xiao-Ya, Ma; Purnell, Mark A.; Williams, Mark (2017-03-08). The Cambrian fossils of Chengjiang, China : the flowering of early animal life. Hou, Xianguang. (Second ed.). Chichester, West Sussex. ISBN 9781118896310. OCLC 970396735.

[2] Bell, W. Charles (1941). "Cambrian Brachiopoda from Montana". Journal of Paleontology. 15 (3): 193–255. JSTOR 1298891.