07757 - Top Quality 0.75 Inch Onnia sp Ordovician Trilobite Coltraneia Ginglymostoma sp: Fossilworks (Paleobiology Database)

Ginglymostoma sp: Fossilworks (Paleobiology Database)

and apart from being widely used in jewelry

That is why only the most robust bones or the most stable parts are usually preserved

Precious natural association of 2 vertebrae bones of this huge Paleocene shark

In the matrix that still surrounds the tooth

07757 - Top Quality 0.75 Inch Onnia sp Ordovician Trilobite Coltraneia Ginglymostoma sp: Fossilworks (Paleobiology Database)Onnia sp, Bancroft 1933 (trilobite) Trilobita Asaphida Trinucleidae Parent taxon: Trinucleidae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Ecology: fast moving low level epifaunal suspension feeder Age range: 460. 9 to 443. 7 Ma