†Hecticoceras (Chanasia) Rollier 1922 (ammonite)
Cephalopoda - Ammonitida - Oppeliidae
Alternative spelling: Chanasia
Synonym: Jeannetia Collignon 1958 [replaced name]
Parent taxon: Hecticoceras according to S. Elmi 1967
See also Arkell et al. 1957, Collignon 1959 and Sepkoski 2002
Sister taxa: Hecticoceras (Jeanneticeras), Hecticoceras (Sublunuloceras), Hecticoceras hecticus, Hecticoceras lairense
Subtaxa: Chanasia fornix Jeannetia hourcqi
Ecology: fast-moving nektonic carnivore
Distribution:
• Jurassic of France (5 collections), Madagascar (5)
Total: 10 collections including 17 occurrences