Cephalopoda - Ammonitida - Pachydiscidae
Alternative spelling: Neodesmoceras
Parent taxon: Pachydiscus according to W. J. Kennedy and W.A. Cobban 1996
See also Jones 1963, Kennedy 1986, Kennedy and Henderson 1992 and Landman et al. 2007
Sister taxa: Pachydiscus (Pachydiscus), Pachydiscus armenicus, Pachydiscus besairiei, Pachydiscus binodatus, Pachydiscus buckhami, Pachydiscus colligatus, Pachydiscus epiplectus, Pachydiscus excelsus, Pachydiscus flexuosus, Pachydiscus gollevillensis, Pachydiscus hauthali, Pachydiscus launayi, Pachydiscus levyi, Pachydiscus naumanni, Pachydiscus neevesi, Pachydiscus patagonicus, Pachydiscus peramplus, Pachydiscus perfidus, Pachydiscus precolligatus, Pachydiscus riccardi, Pachydiscus stallauensis, Pachydiscus steinmanni, Pachydiscus subcompressus, Pachydiscus subrobustus, Parapachydiscus arionis, Parapachydiscus parahybensis, Parapachydiscus athena, Parapachydiscus abbotti, Parapachydiscus poseidon, Parapachydiscus gettyi, Parapachydiscus brasiliensis, Parapachydiscus sumneri, Parapachydiscus euzebioi, Parapachydiscus henleyensis, Parapachydiscus endymion, Pachydiscus (Parapachydiscus) gardneri, Parapachydiscus californicus, Parapachydiscus hermes, Parapachydiscus perseus, Parapachydiscus reedsi, Parapachydiscus cortinaensis, Parapachydiscus williamsoni, Parapachydiscus eurydice, Parapachydiscus oceanus, Parapachydiscus diabloensis, Parapachydiscus psyche, Parapachydiscus bruneti, Parapachydiscus stanislausensis, Parapachydiscus hera, Pachydiscus (Parapachydiscus) woodringi, Parapachydiscus albuquerquei, Parapachydiscus orpheus
Subtaxa: Neodesmoceras catarinae Pachydiscus (Neodesmoceras) mokotibensis Pachydiscus (Neodesmoceras) obsoletiformis Pachydiscus (Neodesmoceras) princeps Pachydiscus (Neodesmoceras) soma
Distribution:
• Cretaceous to Paleogene of United States (1: New Jersey collection)
• Cretaceous of France (1), India (1), Mexico (5), United States (12: Alaska, California)
Total: 20 collections each including a single occurrence