07475 - Top Beautiful 0.84 Inch Heliophora orbicularis (Urchin) Upper Pliocene Pleuroceras Type species : Mosasaurus hoffmanni
Yard notes & kiln story
Description
Type species : Mosasaurus hoffmanni Mantell
Rouault 1847 (trilobite)
Parent taxon: Odontopleuridae according to H
terrestrial (40)
The last feature makes a significant difference in relation to teeth of the genus Liodon Agassiz
07475 - Top Beautiful 0.84 Inch Heliophora orbicularis (Urchin) Upper Pliocene Pleuroceras Type species : Mosasaurus hoffmanniInteresting genus with extremely variable circular to oval shaped test. Beautiful sand dollar urchin.