Synonyms for paleospecies or Related words with paleospecies
Examples of "paleospecies"
A "cerebral rubicon" in paleontology is the minimum cranial capacity required for a specimen to be classified as a certain
or genus. The term is mostly used in reference to human evolution.
"S. stirlingi" fossil evidence shows that tooth row curves medially (anteriorly and posteriorly) from a line tangential to the labial side of the molars at the anterior ridge of the masseteric processes.
"S. stirlingi" had a large, dolichocephalic skull with a more elevated braincase position and an inflamed nasal frontal region in comparison to the contemperaneous skull of the "S. tindelai". "S. andersoni" skull fossils show a dome-like forehead that is unique to "S. andersoni" among other otherdolichocephalic sthenurines. This is attributed to the continuous high vaulting of the frontals above the orbits and the line of the rostrum.
Fossils of large moose-like deer found in Siberia dating from the most recent glaciation are fragmentary and lack intact skulls and complete antlers but they have tentatively been identified as "Cervalces latifrons". They had less advanced teeth, a more specialist muzzle and larger antlers that were bi-lobed and four pronged. They seem to have played a bridging role, crossing the land bridge to Alaska and eventually evolving into "Cervalces scotti" in North America. They were faced with predators well capable of tackling a moose, the brown bear in Siberia and the short-faced bear in Alaska. No such large carnivore was found in Europe at that time as the largest bear in that region, the cave bear, was herbivorous. In Europe, three
of moose seem to have followed each other chronologically. It is not clear whether "Cervalces latifrons" evolved into modern moose or whether it died out in the last glacial period.
A chronospecies is a group of one or more species derived from a sequential development pattern which involves continual and uniform changes from an extinct ancestral form on an evolutionary scale. This sequence of alterations eventually produces a population which is physically, morphologically, and/or genetically distinct from the original ancestors. Throughout this change, there is only one species in the lineage at any point in time, as opposed to cases where divergent evolution produces contemporary species with a common ancestor. The related term
(or palaeospecies) indicates an extinct species only identified with fossil material. This identification relies on distinct similarities between the earlier fossil specimens and some proposed descendant, although the exact relationship to the later species is not always defined. In particular, the range of variation within all the early fossil specimens does not exceed the observed range which exists in the later species.
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