PaleoDB taxon number: 299660
Full reference: R. Chandler and J. Callomon. 2009. The Inferior Oolite at Coombe Quarry, near Mapperton, Dorset, and a new Middle Jurassic ammonite faunal horizon, Aa-3b, Leioceras comptocostosum n.biosp. in the Scissum Zone of the Lower Aalenian. Proceedings of the Dorset Natural History and Archaeological Society 130:99-132
Type specimen: SM X 40269, a shell. Its type locality is Coombe Quarry, Mapperton, Bed 2c,d, which is in an Opalinum shallow subtidal conglomerate/limestone in the United Kingdom.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell width 21.4, shell diameter 78.3