Steropodon
In Depth Before the description of Teinolophos in 1999, Steropodon was considered to be the earliest ancestor of the platypus. Comparison to mammals like the platypus has yielded body estimates of around forty to fifty centimetres long, something that would make Steropodon one of the larger known mammals of the early Cretaceous period. If Steropodon … Read more