A possible case of necrotizing dermatitis in the crocodylian Diplocynodon, from the Oligocene of the Isle of Wight, United Kingdom
Titel:
A possible case of necrotizing dermatitis in the crocodylian Diplocynodon, from the Oligocene of the Isle of Wight, United Kingdom
Auteur:
Wolff, E. D. S. Fowler, D. W. Bonde, J. W.
Verschenen in:
Historical biology
Paginering:
Jaargang 19 (2007) nr. 2 pagina's 203-207
Jaar:
2007-06
Inhoud:
Here we describe a pathological osteoderm from the crocodylomorph Diplocynodon hantoniensis (Bouldnor Formation, earliest Oligocene, Isle of Wight, United Kingdom). The specimen bears a porous, erosive branching channel that distorts the surface ornamentation and periosteum over 60% of the preserved dorsal surface area. We diagnose this condition as necrotizing dermatitis: a surficial bacterial or fungal infection that can penetrate the dermal layers to affect the underlaying penosteum of osteoderms. This condition has been previously reported for an extant tortoise and caiman; however, this is the first reported occurrence in the fossil record.