Paleontologists

Dinosoor - Definition
... Many paleontologists note that the point at which sauropodomorphs and theropods diverged may omit sauropodomorphs from the definition for both saurischians and dinosaurs ... There is near universal consensus among paleontologists that birds are the descendants of theropod dinosaurs ... However, a majority of modern paleontologists reject the traditional style of classification in favor of phylogenetic nomenclature, which requires that all ...

Lissamphibia - Relationships and Definition
... the transition between the elpistostegalid fish and the early amphibians, most paleontologists no longer accept the biphyletic view ... of the Lissamphibia is accepted by most herpetologists and paleontologists, the origin and relationships of the various Lissamphibian groups both with ... Not all paleontologists are convinced that the lissamphibia are indeed a natural group, as the various characteristics are also shared with some Palaeozoic amphibians, and it is still possible that these ...

Protosphyraena - History and Taxonomy
... As is the case with many fossil vertebrates discovered by 19th century paleontologists, the taxonomy of Protosphyraena has had a confusing history ... was named Protosphyraena ferox by the renowned American naturalist and paleontologist, Joseph Leidy, based on Mantell's English finds ... Mudge, a fossil collector supplying material to rival paleontologists Edward Drinker Cope and Othniel Charles Marsh, discovered a number of specimens of ...

Neoproterozoic - Paleobiology
... Nineteenth century paleontologists set the start of multicelled life at the first appearance of hard-shelled animals called trilobites and archeocyathids ... In the early 20th century, paleontologists started finding fossils of multicellular animals that predated the Cambrian boundary ... Some paleontologists relate many or most of these forms to modern animals ...