Sentences with word «catarrhine»

They found that knowledge of catarrhine taxonomy progressed randomly, making little difference to the overall structure of the family tree.

«What we've done is look at the two most intensively studied groups,» Tarver says, and highlighted differences between the relatively stable catarrhine family tree, and the less certain family history of the dinosaurs.

It's not surprising that these parenting principles have been around for 30 million years among catarrhine mammals (of which we are a part).

Tarver and colleagues» study of catarrhines did not include Ida, so they did not measure her effect on the family tree — which is something palaeontologists continue to debate (see «Fossil primate challenges Ida's place»).

Fred Grine, a palaeontologist at the State University of New York in Stony Brook, says, «basically what they're looking at comes down to nothing more than biogeography» and that «if you started finding catarrhines in South America, they'd also change the phylogeny».

Pliopithecoids (primitive catarrhines) have been known from Eppelsheim for some time.

For example, Tarver says, beyond the extant catarrhine species, there is only one known fossil of a chimpanzee species and no gorilla fossils, so more of those might be of greater value for understanding primate evolution than smaller additions to the large body of hominid fossils.

Research interests: Morphology and evolution of catarrhine primates, pattern and process of homoplasy within Mammalia, theory and method of phylogenetic inference.

Stem catarrhines, in turn, are exclusively Afro - Arabic with the possible exception of Asian amphipithecids [86], [88].

However, because dinosaurs lived across a larger geographical area than catarrhines and most of the initial studies took place in Europe and North America, the later addition of dinosaur fossils from Asia and South America has changed the shape of the dinosaur family tree more.

The catarrhine family tree — one of two primate lineages, and the one that includes humans — regularly attracts requests for revision from palaeontologists bearing fossils such as Ida, according to palaeobiologist James Tarver, lead author of the latest study.

Second, the researchers examined the state of the two groups» family trees at ten - year intervals, beginning in 1790 for the catarrhines and in 1840 for the flightless dinosaurs.