Cephalopoda - Ammonitida - Placenticeratidae
Alternative combination: Ammonites syrtalis cumminsi
Belongs to Placenticeras according to W. A. Cobban and S. C. Hook 1983
Sister taxa: Placenticeras benningi, Placenticeras bidorsatum, Placenticeras fritschi, Placenticeras intercalare, Placenticeras kaffrarium, Placenticeras kolbajense, Placenticeras maherndli, Placenticeras mediasiaticum, Placenticeras memoriaschloenbachi, Placenticeras merenskyi, Placenticeras orbignyanum, Placenticeras paraplanum, Placenticeras placenta, Placenticeras polyopsis, Placenticeras pseudoplacenta, Placenticeras semiornatum, Placenticeras syrtale, Placenticeras tamulicum, Placenticeras vancouverense, Placenticeras vredenburgi, Placenticeras whitfieldi
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of United States (11: Arizona, New Mexico, Texas, Utah collections)
Total: 11 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.