Single Polished orthoceras in Matrix approx 2.5 x 4"
Polished Specimens from Morocco
Polished Orthoceras Fossile Small Archeology Specimen The study of complex creatures that inhabited the Earth millions of years ago takes us to the orthoceras (straight horn). It is a genus of extinct nautiloid cephalopod. Orthoceras fossils are common and have a global distribution, occuring in any marine rock, especially limestones. Orthoceras are slender, elongate shells with the middle of the body tconstricted, and a subcentral orthochoanitci siphuncle. The surface is ornamented by a network of fine lirae.