30415 - Rare 0.21 Inch Thoracocare minuta Cambrian Trilobite - Idaho USA Trilobites and Ordinary chondrites (type 4-7)

and Ordinary chondrites (type 4-7)

Platecarpus Cope 1869

Impressive partial vertebra of this species of Elasmosaurus

They preserve the structures with amazing detail

Museum grade natural association

30415 - Rare 0.21 Inch Thoracocare minuta Cambrian Trilobite - Idaho USA Trilobites and Ordinary chondrites (type 4-7)Thoracocare, Robison and Campbell 1974 (trilobite) Trilobita Corynexochida Zacanthoididae PaleoDB taxon number: 22046 Parent taxon: Oryctocephalidae according to A. R. Palmer and R. B. Halley 1979 See also Jell and Adrain 2002 and Sepkoski 2002 Sister taxa: Arthricocephalus, Changaspis, Cheiruroides, Cheiruroididae, Curvoryctocephalus, Duyunaspis, Euarthricocephalus, Feilongshania, Goldfieldia, Hunanocephalus, Kunshanaspis, Lancastria, Metabalangia,