Ursus “maritimus tyrannus”
Described and named in Kurten (1964), it consist of a lone ulna found near Kew Bridge, London, catalogued as BM 24361. The ulna is missing the distal epiphysis which Kurten (1964) interpreted as a sign of the specimen being sub-adult, even with said piece missing the ulna is about 440mm long and it was estimated that it would have been 485mm long when complete. On plate 2 of his paper, Kurten compared BM 24361 with a large sub-adult polar bear (UZI 3) and here I do the same.
On the face of it BM 24361 is a giant, 13.3% longer than UZI 3 and the maximum proximal diameter corroborates that measuremen