Propalaeotherium, Messel Horse Skeleton Troodon they are in fact more

they are in fact more closely related to the modern Asian Elephant than either of the two African elephants

Sharks arose in the Devonian Age some 400 million years ago

naturally occurring polymorphs of calcium carbonate

Erik Stensiö described a metre-long specimen as a new species

Propalaeotherium, Messel Horse Skeleton Troodon they are in fact moreSixty one complete skeletons of primitive horses have been found so far at the Messel site. The most common species is Eurohippus parvulus, with 44 specimens found, which was about the size of a fox terrier (30 35 cm high at the shoulder). Less common Propalaeotherium hassiacum, with 15 specimens found, was about the size of a german shepherd. Only two specimens of Hallensia matthesi have been found (its size was intermediate to the other two