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Acanthopecten
Images: 
By DPS Ammonite
Taxonomy
Scallop
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinida
Family: Limipectinidae
Genus: Acanthopecten
Species: Acanthopecten sp.
Author Citation Girty 1903
Geological Time Scale
Eon: Phanerozoic
Era: Paleozoic
Period: Carboniferous
Sub Period: Pennsylvanian
Epoch: Middle
International Age: Moscovian
Stratigraphy
Naco Formation
Provenance
Collector: Me
Date Collected: 05/05/2020
Acquired by: Field Collection
Dimensions
Width: 21 mm
Location
Roberts Mesa
Gila County
Arizona
United States
Comments
Distinctive scalloped growth lines and angular plications identify this scallop as an Acanthopecten. This is the best specimen of its genera for the Naco where molluscs are common but usually poorly preserved.
Found in 200 mm wide slab with Composita subtilita, Myalina (Myalina) nacoensis, Anthracospirifer occiduus, Derbyia crassa, Aviculopecten, minute coiled gastropods, crinoid columnals, several bryozoans species and scaphopods.
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