Query: Prehistoric marine mammals excluding Neogene
Domain: animals
Relevant documents:
Steller's sea cow
Parasqualodon
Agorophius
Hoplocetus
Mirocetus
Mycteriacetus
Tagicetus
Waipatia
Eurhinodelphinidae
Xenorophidae
Squalodelphinidae
Ankylorhiza
Squalodontidae
Otekaikea
Simocetus