555 followers
@drmambobob @MarkWitton @Tomozaurus @DSRovinsky @TetZoo There are also quite different takes on the usage of "stem" (making non-avian dinosaurs "stem-dinosaurs"). https://t.co/849mT6x5li
223 followers
Of course, "A much simpler explanation is available: hard-tissue characters are unreliable specifically among extant species because the hard-tissue anatomy of extant species is usually very poorly known." https://t.co/ivSUe9AGQu
300 followers
RT @m_matschiner: Quite an entertaining read (for something as dry as fossil calibrations) and probably the best time calibration of the ve…
1,315 followers
Quite an entertaining read (for something as dry as fossil calibrations) and probably the best time calibration of the vertebrate tree of life that is currently available, by David Marjanovic: https://t.co/tReIV9fLV6