Calymene Trilobite Specimens a.jpg
Calymene Trilobite Specimens
Ktaoua Group, Anti-Atlas region, Morocco
TIME PERIOD: Upper Ordovician (445-458 Million Years ago)
Data: 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.
Kingdom: Animalia
Phylum: Arthropoda
Class: †Trilobita
Order: †Phacopida
Family: †Calymenidae
Genus: †Calymene
Photo Information
- Taken with Canon Canon PowerShot SX120 IS
- Focal Length 6 mm
- Exposure Time 1/60
- f Aperture f/2.8
- ISO Speed 80
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