Trilobite Bed, Mount Stephen (Cambrian of Canada)

Where: British Columbia, Canada (51.4° N, 116.4° W: paleocoordinates 3.7° S, 80.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bathyuriscus-Elrathina trilobite zone, Campsite Cliff Shale Member (Burgess Shale Formation), Delamaran (513.0 - 505.0 Ma)

• Pagetia bootes subzone, trilobite bed

• bed-level stratigraphic resolution

Environment/lithology: deep-water; lithified shale

Size class: macrofossils

Preservation: mold/impression

Primary reference: J. K. Rigby and D. Collins. 2004. Sponges of the Middle Cambrian Burgess Shale and Stephen Formations, British Columbia. Royal Ontario Museum Contributions in Science 1:1-155 [W. Kiessling/U. Merkel/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121957: authorized by Wolfgang Kiessling, entered by Uta Merkel on 12.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Demospongea
 Protomonaxonida - Hazeliidae
Hazelia conferta Walcott 1920 demosponge
Hazelia palmata Walcott 1920 demosponge
Hazelia grandis Walcott 1920 demosponge
Hazelia delicatula Walcott 1920 demosponge
 Protomonaxonida - Piraniidae
Pirania muricata Walcott 1920 demosponge
 Protomonaxonida - Ulospongiellidae
Hapalospongia flexuosa n. gen. n. sp., Ulospongiella ancyla n. gen. n. sp.
Hapalospongia flexuosa n. gen. n. sp. Rigby and Collins 2004 demosponge
Ulospongiella ancyla n. gen. n. sp. Rigby and Collins 2004 demosponge
 Protomonaxonida - Halichondritidae
? Halichondrites sp. Walcott 1920 demosponge
 Protomonaxonida - Hamptoniidae
Hamptoniella foliata n. gen. n. sp. Rigby and Collins 2004 demosponge
Hamptoniella hirsuta n. sp. Rigby and Collins 2004 demosponge
Hamptonia bowerbanki Walcott 1920 demosponge
 Protomonaxonida - Choiidae
Choia carteri Walcott 1920 demosponge
Hexactinellida
 Reticulosa - Hintzespongiidae
Stephenospongia magnipora Rigby 1986 glass sponge
 Reticulosa - Protospongiidae
Diagoniella cyathiformis Dawson and Hinde 1889 glass sponge
Protospongia hicksi Hinde 1887 glass sponge
Heteractinida
 Octactinellida - Eiffeliidae
Eiffelospongia hirsuta n. gen. n. sp. Rigby and Collins 2004
Petaloptyon danei Raymond 1931
Eiffelia globosa Walcott 1920