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What is a pachyceratid?
A pachyceratid is a member of the Pachyceratidae, a family of ammonites from the middle- and upper-Jurassic period.
Do ammonites live in today's seas?
ammonites are extinct
What is a xenacanthid?
A xenacanthid is a member of the Xenacanthidae family of animals, a family of prehistoric sharks.
What are ammonites named for?
Ammonites are named for the Egyptian god Ammon, who had a ram's head. The shells of ammonites are spirals like the horns of a ram.
What were predators of ammonites?
Various aquatic reptiles were predators of ammonites. Fossils of damaged ammonites have been found with teeth marks from Plesiosaurs.
What is the branch of science most closely related to the study of prehistoric cultures?
The study of prehistoric cultures to the first development of agriculture, about 10,000 years ago, is called paleoanthropology.
Which states had prehistoric animals?
All states had prehistoric animals. The question is which states had which ones. For example, California and Florida were underwater during most of the Age of Reptiles, so they had no dinosaurs, but they still had marine creatures (although little is known of Florida's prehistoric life). In California, we do know that Shonisaurus, a 49 foot long icthyosaur, lived here, along with ammonites and many other aquatic animals.
Who are the ammonites?
Squid
What eon was ammonites introduced?
Ammonites first appeared during the Devonian Period within the Paleozoic Era.
What does each branch on a tree represent?
In genealogy, a branch on a family tree can represents a nuclear family or a person.
What period in which the last ammonites became extinct?
Ammonites went extinct at the end of the Cretaceous Period.
Where was ammonites dominant?
Ammonites are very common fossils from the Jurassic Period. They were dominant in the ocean during and before the Jurassic Period.
