Scientific Classification
| Kingdom: Animalia |
| Phylum: Braciopoda |
| Class: Rynchonellata |
| Order: Spiriferida |
| Family: Ambocoellidae |
| Genus: Crurispina |
| Species: Crurispina nana (Grabau, 1899) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
References
Linsley, D., 1994: p. 200, figs. 13-15
Goldman, D. and Mitchell, C., 1990: Article recombining Ambocoelia nana as Crurispina nana, not open access. Link.
Remarks
Originally described as Ambocoelia nana by Grabau in 1899. Recombined as Crurispina nana by Goldman and Mitchell in 1990.
From Carl Brett: This diminutive brachiopod is found commonly in monospecific or low diversity pavements dark gray fissile shales recording in deeper water dysoxic setting and may be associated with other unusual forms such as Truncalosia, Rhipidothyris and small Tropidoleptus. This may be an analogous biofacies to Chonetid dominated diminutive brachiopod associations as the brachiopods appear to be non-native Rhenish-Bohemian taxa. Crurispina-Truncalosia-small Tropidoleptus assemblages are typical of some deeper water, dark shale facies in the upper Skaneateles Formation, the Ledyard and Wanakah Shale of the Ludlowville. In the Moscow Formation, Windom and Garrettsville members, these brachiopods may be associated with small Allanella.