X-Nico

unusual facts about Hauterivian



Similar

Lytoceratinae

Five are known from the Early Cretaceous; Pterolytoceras and Metalytoceras from the Valangian (Petrolytoceras may extend back to the Tithonian), Eulytoceras from the Hauterivian - Barremian, Argonauticeras and Pictetia from the Aptian - Albian.


see also