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Canadaspis
Canadaspis
The anterior region of the body of this primitive crustacean has well-developed carapace, which covers the cephalic region and the thorax, while the abdomen emerges posteriorly from it. the extremities of the limbs protrude from the lower part of the carapace. The carapace itself is composed of two lateral valves with an average length of approximately 35 mm. The eyes and a pair of antennae are also visible. In fossils it is possible to distingush the appendages that makes up the oral appratus as well. the thorax is divided into eight segments, each of which carries a pair of appendages, which in turn are composed of two elements. There are seven abdominal somites, all of them without appendages, apart from the last one. there is also a small telson.
Note --In fossil from Canadaspis characteristically occurs in numerous groups. Because of the structure of its limbs it is probable that the animal lived on the sea floor, where it could move with ease, and possibly swim. Thanks to its powerful masticatory apparatus, it could eat firm pieces of food.
Copyright 1986 by Arnoldo Mondadori Editore S.p.A, Milan
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