Marjum Formation, Locality 1 (Cambrian of the United States)

Where: Utah (39.2° N, 113.3° W: paleocoordinates 4.3° S, 91.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Marjum Formation, Menevian (504.5 - 499.5 Ma)

• Bolaspidella Zone; Marjuman

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, calcareous mudstone and lithified limestone

• part of the House Embayment, which is fault-bound on the passive margin

Size class: macrofossils

Primary reference: J. K. Rigby. 1983. Sponges of the Middle Cambrian Marjum Limestone from the House Range and Drum Mountains of Western Millard County, Utah. Journal of Paleontology 57(2):240-270 [S. Peters/S. Peters]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 56186: authorized by Shanan Peters, entered by Shanan Peters on 15.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Hexactinellida
 Reticulosa - Protospongiidae
Diagoniella cyathiformis
Diagoniella cyathiformis Dawson and Hinde 1889 glass sponge
Demospongiae
 Protomonaxonida - Leptomitidae
"Leptomitus metta n. sp." = Leptomitella metta
"Leptomitus metta n. sp." = Leptomitella metta Rigby 1983 demosponge
 Protomonaxonida - Choiidae
Choia hindei
Choia hindei Dawson 1896 demosponge
 Protomonaxonida - Hamptoniidae
Hamptonia bowerbanki
Hamptonia bowerbanki Walcott 1920 demosponge