Height 47 mm

the Edmonton River bed in Alberta

Orcinus citoniensis may have hunted large fish and squid in packs

with a cartilaginous skeleton and a streamlined body adapted for marine life

Sinomegaceros pachyosteus Guanlong Height 47 mmMorphological description and paleoenvironmental considerations of Sinomegaceros pachyosteus (Artiodactyla, Cervidae) from the Pleistocene of China Sinomegaceros pachyosteus is an extinct species of giant deer in the genus Sinomegaceros , known for its spectacular antlers and large body size. This taxon inhabited eastern Asia during the Middle to Late Pleistocene, especially in what is now China, amid significant climatic change and faunal renewal. S.