| Acaste Temporal range: 443–416 Ma Silurian |
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| Acaste downingiae (Murchison), on display at the Natural History Museum, London | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Trilobita |
| Superorder: | Phacopina |
| Order: | Phacopida |
| Superfamily: | Acastoidea |
| Family: | Acastidae |
| Genus: | Acaste |
| Species | |
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See text |
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Acaste is a genus of extinct trilobite of the order Phacopida which lived throughout the Silurian period. They are characterized by a convex dorsal surface, an absence of spines, a shortening of the head-shield and a general rounding off of all angles.[1] Species include Acaste downingiae [2] (Wenlock Series) and Acaste birminghamensis, discovered in the Red Mountain Expressway Cut.
References [link]
- ^ H H Swinnerton - Outlines of Palaentology, Edward Arnold (Publishers) Ltd, 1972 (p. 247) ISBN 0-7131-2357-5.
- ^ British Palaeozoic Fossils - Natural History Museum 4th edition 1975. Plate 29. ISBN 0-565-05624-7.
See also [link]
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