According to Clack et al. 2016
“The term ‘Romer’s Gap’ was coined for a hiatus of approximately 25 million years (Myr) in the fossil record of tetrapods, from the end-Devonian to the mid-Mississippian (Viséan).” 428 more words
Tags » Tetrapods
A Jaw-Dropping Tumor from 255 Million Years Ago: Researchers Study Mammalian Ancestor for Clues to Odontoma
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A research letter submitted to JAMA Oncology by Megan R. Whitney, M.Sc. purports to shed new light on an apparently ancient, but still prevalent health concern – odontoma, benign dental tumors similar to neoplasia which are typically formed from by irregular growths of enamel, dentin and cementum. 476 more words