Jeffersonia Poulson 1927 (trilobite)

Trilobita - Proetida - Bathyuridae

Synonym: Bathyurina Poulsen 1937

Parent taxon: Bathyurinae according to R. A. Fortey and D. L. Bruton 2013

See also Jell and Adrain 2002, Sepkoski 2002 and Whittington 1968

Sister taxa: Bathyurine, Bolbocephalus, Catochia, Cullisonia, Gelasinocephalus, Peltabellia, Petigurus, Psalikilopsis, Rananasus, Ranasasus, Speyeris

Subtaxa: Bathyurina megalops Jeffersonia bridgei Jeffersonia exterminata Jeffersonia granosa Jeffersonia jenni Jeffersonia striagena Jeffersonia timon Jeffersonia ulrichi Jeffersonia viator

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Type: Jeffersonia exterminata

Ecology: fast-moving low-level epifaunal deposit feeder

Distribution:

• Ordovician of Canada (14: Newfoundland, Newfoundland and Labrador, Nunavut collections), Norway (4), United States (6: Missouri, Nevada, Texas, Utah)

• Cassinian of Canada (17: Newfoundland, Newfoundland and Labrador, Quebec), United States (12: Missouri, Oklahoma)

• Arenig of Greenland (2)

• Canadian of Canada (1: Newfoundland and Labrador)

• Jeffersonian of Canada (10: Newfoundland, Newfoundland and Labrador), United States (29: Oklahoma, Texas)

Total: 95 collections including 116 occurrences

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