Calymene
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Calymene Temporal range: Tremadocian to Pragian488.3–409.1 Ma |
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| Calymene clavicula 32mm, Henryhouse Formation, Oklahoma, Cayugan | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Phacopida |
| Family: | †Calymenidae |
| Genus: |
†Calymene Münster, 1840 |
| Type species | |
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Calymene blumenbachii Brongniart in Desmarest, 1817 |
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Calymene (meaning beautiful crescent as a reference to the glabella) is a genus of trilobites in the order Phacopida that are found throughout North America, North Africa, and Europe in primarily Silurian outcrops.Calymene is closely related to Flexicalymene, and both genera are frequently found inrolled. Calymene trilobites are small, typically 2 cm in length. Their cephalon is the widest part of the animal, and the thorax is usually in 13 segments.
Since the genus Calymene was established early on in paleontology, a number of species previously assigned to it have since been transferred to other genera:
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