Article: On growth stages in branchiosaurs

Lower Permian material from Niederhasslich, Friedrichroda, and Odernheim in the author's collection and in the British Museum (Natural History) is reviewed and described. A new species, Branchiosaurus brachyrhynchus sp. nov., is erected for specimens from Friedrichroda; B. flagrifer Whittard is redefined. New combinations are Branchiosaurus (Micromelerpetori) credneri (Bulman and Whittard) and B. (Leptorophus) levis (Bulman).