Discrete and continuous character-based disparity analyses converge to the same macroevolutionary signa. A case study from captorhinids [PDF]
, 2017 The relationship between diversity and disparity during the evolutionary history of a clade provides unique insights into evolutionary radiations and the biological response to bottlenecks and to extinctions.
Brocklehurst, Neil +2 more
core +2 more sources
Using abundance data to assess the relative role of sampling biases and evolutionary radiations in Upper Muschelkalk ammonoids [PDF]
, 2011 The Middle Triassic ammonoid genus Ceratites diversified spectacularly within the Germanic Muschelkalk Basin during the Anisian/Ladian (244–232 Mya). Previous studies have interpreted this diversification as a sequence of rapid, endemic radiations from a
Kiessling, Wolfgang +1 more
core +1 more source
Body mass estimation in Triassic cynodonts from Argentina based on limb variables
Acta Palaeontologica Polonica, 2022 Body mass estimations for extinct taxa are fundamental in palaeobiological reconstructions, but little work has been done on this topic for non-mammaliaform cynodonts (NMC), the diverse and abundant Permo-Cretaceous forerunners of mammals.
FLORENCIA S. FILIPPINI +2 more
doaj +1 more source
Appendicular skeleton of Protoceratops andrewsi (Dinosauria, Ornithischia): comparative morphology, ontogenetic changes, and the implications for non-ceratopsid ceratopsian locomotion [PDF]
PeerJ, 2019 Protoceratops andrewsi is a well-known ceratopsian dinosaur from the Djadokhta Formation (Upper Cretaceous, Mongolia). Since the 1920s, numerous skeletons of different ontogenetic stages from hatchlings to adults, including fully articulated specimens ...
Justyna Słowiak +2 more
doaj +2 more sources
Comparative bone microstructure of three archosauromorphs from the Carnian, Late Triassic Chañares Formation of Argentina [PDF]
Acta Palaeontologica Polonica, 2020 The Chañares Formation exhibits one of the most important archosauriform records of early Carnian ecosystems. Here we present new data on the palaeohistology of Chañares archosauriforms and provide new insights into their paleobiology, as well as ...
Jordi Alexis Garcia Marsà +2 more
doaj +1 more source
A Review and Evaluation of Homology Hypotheses in Echinoderm Paleobiology
, 2023 The extraxial-axial theory (EAT) and universal elemental homology (UEH) are often portrayed as mutually exclusive hypotheses of homology within pentaradiate Echinodermata. EAT describes homology upon the echinoderm bauplan, interpreted through early post-
C. Sumrall +4 more
semanticscholar +1 more source
Climate change and the selective signature of the Late Ordovician mass extinction [PDF]
, 2012 Selectivity patterns provide insights into the causes of ancient extinction events. The Late Ordovician mass extinction was related to Gondwanan glaciation; however, it is still unclear whether elevated extinction rates were attributable to record ...
Finnegan, Seth +3 more
core +3 more sources
Scientific Reports, 2022 Desmostylia is an extinct clade of marine mammals with two major sub-clades, Desmostylidae and Paleoparadoxiidae, known from Oligocene to Miocene strata of the North Pacific coastline.
Kumiko Matsui +2 more
doaj +1 more source
Faunal Assemblages From Lower Bed I (Oldupai Gorge, Tanzania)
Frontiers in Ecology and Evolution, 2022 Palaeobiological and archeological excavations at the site of Ewass Oldupa, found in the western Plio-Pleistocene rift basin of Oldupai Gorge (also Olduvai Gorge), Tanzania, revealed rich fossiliferous levels and the earliest remains of human activity at
Pamela Akuku +12 more
doaj +1 more source
What are the limits on whale ear bone size? Non-isometric scaling of the cetacean bulla [PDF]
PeerJ, 2021 The history of cetaceans demonstrates dramatic macroevolutionary changes that have aided their transformation from terrestrial to obligate aquatic mammals.
Sabrina L. Groves +2 more
doaj +2 more sources