Cephalopoda - Ammonitida - Olcostephanidae
Parent taxon: Olcostephanoidea according to Z. Vašíček et al. 2023
See also Aguirre-Urreta and Alvarez 1999, Aguirre-Urreta and Rawson 1999, Aguirre-Urreta and Rawson 2001, Arkadiev et al. 2000, Frau et al. 2016, González-Arreola et al. 2017, Kemper and Jeletzky 1979, Klein 2005, Lukeneder 2004, Mourgues et al. 2015, Pandey and Pathak 2017, Reboulet 1996, Vasicek 2002, Wright 1952 and Zell et al. 2015
Sister taxa: none
Subtaxa: Garcites Mexicanoceras Olcostephaninae Spiticeratinae
Type: Olcostephanus
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Antarctica (3 collections), Argentina (65), Austria (6), Chile (25), Colombia (9), the Czech Republic (5), Egypt (1), France (257), Georgia (2), Honduras (1), Hungary (26), India (4), Iran (2), Iraq (4), Italy (26), Mexico (38), Morocco (40), Peru (1), Poland (10), Portugal (4), Romania (1), Serbia and Montenegro (4), Slovakia (6), South Africa (2), Spain (63), Switzerland (1), Trinidad and Tobago (1), Tunisia (18), Ukraine (8), United States (19: California, Oregon, Washington), Yemen (11)
• Jurassic to Cretaceous of Chile (1), the Russian Federation (1), Spain (1), United States (1: Oregon)
• Jurassic of Argentina (2), Chile (1), Cuba (1), France (3), Hungary (1), India (7), Iraq (2), Mexico (2), Nepal (1), Peru (1), United States (6: California), Yemen (2)
Total: 696 collections including 940 occurrences