pomphorhynchus:
Fossil sea urchin (echinoid) spine : (Tylocidaris?) : negative impression in flint
pomphorhynchus:
Sutures on outer surface of Jurassic ammonite
pomphorhynchus:
Sutures on outer surface of Jurassic ammonite (detail)
pomphorhynchus:
Echinocorys scutata : Cretaceous irregular echinoid echinoderm fossil : Upper Chalk : Newhaven East Sussex England
pomphorhynchus:
Ridiculously exotic Devonian trilobite from Morocco (B&W version)
pomphorhynchus:
Ridiculously exotic Devonian trilobite from Morocco
pomphorhynchus:
Belemnite section on a floor tile at King's Place
pomphorhynchus:
Ammonite section on a floor tile at King's Place London