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Sister taxa: Otarion (Otarion)
with different phenocrysts and mineral transformations
Parent taxon: Oryctocephalidae according to P
offshore ramp (1)
The eyes facets of this specimen are well detailed
30318 - Rare 0.43 Inch Spencia typicalis Middle Cambrian Trilobite - Utah USA Fulgurites (Petrified lightnings) Sister taxa: Otarion (Otarion)Spencia typicalis, Resser 1939 (trilobite) Trilobita Ptychopariida Ptychopariidae PaleoDB taxon number: 235010 Full reference: C. E. Resser. 1939. The Spence Shale and its fauna. Smithsonian Miscellaneous Collections 97(12): 1 29 Belongs to Spencia according to C. E. Resser 1939 Sister taxa: Spencia plena, Spencia quadrata, Stauroholcus typicalis Type specimen: USNM 96535 Ecology: fast moving low level epifaunal carnivore
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