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but another type of extinct reptile
This explains why in some areas shark teeth are so common
the calyx (or head) which contains the mouth parts and internal organs
and its hind legs shorter
a thorax of up to 30 segments
Dicranurus monstrosus, Trilobite (Replica) Dimetrodon but another type of extinctHere is one of the more sought after trilobites of the Order Lichida, Family Odontopleuridae known as Dicranurus monstrosus. This specimen was found in the Devonian Megrane Formation near Oulmes, Morocco. Among its impressive features are the dramatically retorted occipital spines, looking like ram's horns. To what purpose could this spiny exoskeleton have been evolved? The answer is simple DEFENSE!! Fish had recently evolved jaws, and in the never
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