"This is not an evolutionary position that they've taken.
This indicates that the chemoreceptor system of amphibians reflects their evolutionary position as terrestrial animals that are still dependent on an aquatic environment for breeding.
There is much disagreement concerning the evolutionary position of the ornithosuchids within the Crurotarsi, because they appear to possess both crocodilian and dinosaur-like features that paleontologists have not fully sorted out.
Finally, we note the remarkable evolutionary position of one opsin, melanopsin.
In phylogeny striated muscle tissue appears first in jellyfish and the question of its evolutionary position is controversially discussed.
The fact that a methionine-rich legumin coexists together with methionine-poor legumins in buckwheat should be an important element regarding the evolutionary position of buckwheat.
The evolutionary position of pSD107 within the IncI1 family of plasmids was inferred from a maximum likelihood phylogenetic tree and by comparison of genetic key elements in a set of 17 IncI1 reference plasmids.
Examination of the fish specimen revealed delicate details of the creature's head and neck, confirming and elaborating on its evolutionary position as "an important stage in the origin of terrestrial vertebrates".
As we can with mammals, we can identify the evolutionary position of fossil birds with their extant relatives and determine their life habits and soft tissue anatomy based on preserved anatomical features.
Although many other experts are smitten by Archaefructus, they say they won't be swept off their feet until they've had a closer look at the characters used to establish its evolutionary position.
Because of this, its evolutionary position is somewhat unclear.
