[D] Calamospondylus oweni [dG] [T]
Cretaceous Early Valanginian Hauterivian Barremian
Saurischia Theropoda Tetanurae Coelurosauria Nomina Dubia
Wealden Beds, Isle of Wight, England
The type material (now lost) consists of 9 vertebrae ( 2 dorsals, 5 sacrals, and 2 caudals) , the fused distal portions of both pubes, and an angual phalanx. It should be noted that Seeley, 1887 questioned the reference of the two sacral vertebrae to this taxon. Calamospondylus oweni Fox, 1866, is clearly a senior objective synonym of [Poekilopleuron pusillus] Owen, 1876, and Aristosuchus pusillus (Seeley, 1887)
Despite the poor original description of Calamospondylus oweni by Fox, this is clearly the type species of this material and relegates Aristosuchus pusillus and [Poekilopleuron pusillus]-names that have occurred in the recent literature on a number of occasions- into synonymy. Additional genera and species have also become entangled with this group of taxonomic names.