Cephalopoda - Ammonitida - Vascoceratidae

Synonym: Gombeoceras Reyment 1954

Parent taxon: Pseudotissotiinae according to G. R. Chancellor et al. 1994

Sister taxon: Pseudotissotia

Subtaxa: Thomasites adkinsi, Thomasites fischeri, Thomasites gongilensis, Thomasites rollandi

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Ecology: fast-moving nektonic carnivore