Trilobita - Phacopida - Pterygometopidae
Alternative combination: Calliops callirachis
Synonym: Calliops loxorachis Cooper 1953
Full reference: B. N. Cooper. 1953. Trilobites from the Lower Champlainian formations of the Appalachian Valley. Geological Society of America Memoir 55:1-69
Belongs to Calyptaulax according to B. D. E. Chatterton and R. Ludvigsen 1976
See also Chatterton and Ludvigsen 1976 and Cooper 1953
Sister taxa: Calyptaulax angusta, Calyptaulax annulata, Calyptaulax brongniartii, Calyptaulax callicephalus, Calyptaulax cornwalli, Calyptaulax glabella, Calyptaulax holstonensis, Calyptaulax hunteri, Calyptaulax incepta, Calyptaulax norvegicus, Calyptaulax sillimani
Type specimens:
- Calyptaulax callirachis: USNM 116535a, a cephalothorax. Its type locality is Loc. 3. south side of road, 0.2 mile east of Strasburg Junction, which is in a Turinian carbonate limestone in the Edinburg Formation of Virginia.
- Calliops loxorachis: USNM 116495c, a pygidium.
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Whiterockian of Canada (1: Northwest Territories collection)
• Chazyan of Canada (9: Northwest Territories)
• Ordovician of United States (7: Nevada, Virginia)
Total: 17 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.