†Olcostephanus (Jeannoticeras) Thieuloy 1965 (ammonite)

Cephalopoda - Ammonitida - Olcostephanidae

Parent taxon: Olcostephanus according to M. B. Aguirre-Urreta and P. F. Rawson 2001

See also Reboulet 1996

Sister taxa: Olcostephanus (Olcostephanus), Olcostephanus (Viluceras), Olcostephanus astierianus, Olcostephanus atherstoni, Olcostephanus delicatecostatus, Olcostephanus detonii, Olcostephanus paucicostatus, Olcostephanus pecki, Olcostephanus popenoei, Olcostephanus sanlazarensis, Maderia marcosensis, Maderia casitensis, Maderia marcoensis, Maderia coahuilensis, Taraisites bosei, Astieria zacatecana, Astieria bangei, Holcostephanus (Astieria) josephinus, Astieria raricostata, Astieria neohispanica, Subastieria balkanica, Subastieria sulcosus, Subastieria inordinata, Subastieria sulcosae

Subtaxa: Olcostephanus (Jeannoticeras) agrioensis Olcostephanus (Jeannoticeras) jeannoti

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Type: Ammonites jeannoti

Ecology: fast-moving nektonic carnivore

Distribution:

• Cretaceous of Argentina (4 collections), France (19), Georgia (1), Hungary (1), Italy (1), Mexico (4), Spain (1), Tunisia (2)

Total: 33 collections each including a single occurrence

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