Yx-51-70. Sheep Mountain quadrangle (Ordovician of Canada)
Where: Yukon, Canada (65.1° N, 141.0° W: paleocoordinates 15.2° N, 54.5° W)
When: Upper Member (Jones Ridge Limestone Formation), Ashgill (449.5 - 443.7 Ma)
Environment/lithology: marine; lithified limestone
Size class: macrofossils
Preservation: replaced with silica
Collected by Ormiston in 1970
Collection methods: chemical
Primary reference: J. K. Rigby, A. W. Potter, and R. B. Blodgett. 1988. Ordovician sphinctozoan sponges of Alaska and Yukon Territory. Journal of Paleontology 62(5):731-746 [A. Miller/S. Kolbe]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 99659: authorized by Arnold Miller, entered by Sarah Kolbe on 18.11.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
• Only sponges are described in the current references.
Show authors, comments, and common names
| Brachiopoda | |
|
Brachiopoda indet. Cuvier 1805 | |
| Heteractinida | |
|
Nucha ? naucum Pickett and Jell 1983 | |
| Demospongiae | |
|
Imperatoria media Rigby and Potter 1986 demosponge | |
? Corymbospongia perforata, Corymbospongia mica, Corymbospongia betella, Pseudoimperatoria ? minima, Pseudoimperatoria media
? Corymbospongia perforata demosponge
Corymbospongia mica Rigby and Potter 1986 demosponge
Corymbospongia betella Rigby et al. 1988 demosponge
Pseudoimperatoria ? minima Rigby and Potter 1986 demosponge
Pseudoimperatoria media Rigby and Potter 1986 demosponge | |