Cephalopoda - Ammonitida - Placenticeratidae
Alternative combination: Ammonites syrtalis
Synonym: Stantonoceras pseudocostatum Johnson et al. 1964
Belongs to Placenticeras according to W. J. Kennedy et al. 2001
See also Böse 1928, Kennedy and Cobban 1991 and Kennedy and Cobban 1993
Sister taxa: Placenticeras bidorsatum, Placenticeras cumminsi, Placenticeras fritschi, Placenticeras kaffrarium, Placenticeras kolbajense, Placenticeras maherndli, Placenticeras mediasiaticum, Placenticeras memoriaschloenbachi, Placenticeras orbignyanum, Placenticeras paraplanum, Placenticeras placenta, Placenticeras polyopsis, Placenticeras pseudoplacenta, Placenticeras semiornatum, Placenticeras tamulicum, Placenticeras vancouverense, Placenticeras vredenburgi, Placenticeras whitfieldi
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Canada (1: Alberta collection), France (1), Mexico (4), United States (9: Colorado, Delaware, Maryland, Mississippi, New Jersey, New Mexico, Texas)
Total: 15 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.