Cephalopoda - Ammonitida - Pachydiscidae
Parent taxon: Pachydiscus according to J. W. M. Jagt et al. 2019
See also Cobban and Kennedy 1992, Henderson 1970, Kennedy 1986, Kennedy 1993, Kennedy 1995, Kennedy 1995, Kennedy 1999, Kennedy and Bilotte 1995, Kennedy and Cobban 1993, Kennedy and Cobban 1993, Kennedy and Cobban 1994, Kennedy and Cobban 1997, Kennedy and Kaplan 1995, Kennedy and Summesberger 1986, Kennedy and Summesberger 1987, Macellari 1986, Morozumi 1985, Niebuhr et al. 2016 and Ward and Kennedy 1993
Sister taxa: Pachydiscus (Neodesmoceras), 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 psyche, Parapachydiscus parahybensis, Pachydiscus (Parapachydiscus) woodringi, Parapachydiscus abbotti, Parapachydiscus sumneri, Parapachydiscus perseus, Parapachydiscus diabloensis, Parapachydiscus endymion, Parapachydiscus brasiliensis, Parapachydiscus hermes, Parapachydiscus eurydice, Pachydiscus (Parapachydiscus) gardneri, Parapachydiscus oceanus, Parapachydiscus californicus, Parapachydiscus williamsoni, Parapachydiscus poseidon, Parapachydiscus euzebioi, Parapachydiscus stanislausensis, Parapachydiscus bruneti, Parapachydiscus hera, Parapachydiscus athena, Parapachydiscus albuquerquei, Parapachydiscus arionis, Parapachydiscus orpheus, Parapachydiscus gettyi, Parapachydiscus henleyensis, Parapachydiscus cortinaensis, Parapachydiscus reedsi
Subtaxa: Pachydiscus (Pachydiscus) arkansanus Pachydiscus (Pachydiscus) australis Pachydiscus (Pachydiscus) awajiensis Pachydiscus (Pachydiscus) cayeuxi Pachydiscus (Pachydiscus) complanatus Pachydiscus (Pachydiscus) dossantosi Pachydiscus (Pachydiscus) duelmensis Pachydiscus (Pachydiscus) egertoni Pachydiscus (Pachydiscus) gutierrezi Pachydiscus (Pachydiscus) haldemsis Pachydiscus (Pachydiscus) hazzardi Pachydiscus (Pachydiscus) jacquoti Pachydiscus (Pachydiscus) jeani Pachydiscus (Pachydiscus) kamishakensis Pachydiscus (Pachydiscus) neubergicus Pachydiscus (Pachydiscus) noetlingi Pachydiscus (Pachydiscus) oldhami Pachydiscus (Pachydiscus) ootacodensis Pachydiscus (Pachydiscus) paulsoni Pachydiscus (Pachydiscus) rogeri Pachydiscus (Pachydiscus) ultimus Pachydiscus (Pachydiscus) yama
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Antarctica (21 collections), Australia (22), Austria (2), Belgium (3), Brazil (1), Bulgaria (3), Canada (1: British Columbia), Chile (5), Denmark (4), Egypt (2), France (37), Germany (11), India (1), Iran (2), Japan (3), Jordan (1), Mexico (1), the Netherlands (1), New Zealand (1), Nigeria (2), Oman (5), South Africa (1), Spain (1), Turkey (2), Ukraine (3), the United Arab Emirates (1), United States (51: Alaska, Arkansas, California, Delaware, New Jersey, Texas)
Total: 188 collections including 210 occurrences