WebSep 28, 2022 · Summary of the results of analyses based on 55 living and extinct chordate taxa, conducted under likelihood and parsimony optimization; the full results are shown in Supplementary Data 4. The ...

WebPikaia gracilens is an extinct, primitive chordate animal known from the Middle Cambrian Burgess Shale of British Columbia.Described in 1911 by Charles Doolittle Walcott as an annelid, and in 1979 by Harry B. Whittington and Simon Conway Morris as a chordate, it became the "most famous early chordate fossil," or "famously known as the earliest" …

WebJul 28, 2022 · pixivision. Drawings Featuring Strapped Shoes - Buckle Up for a Wild Fashion Ride 2022-11-23 17:00:00 Drawings Featuring Covered Mouths - Our Lips are Sealed 2022-11-22 18:00:00 Drawings Featuring Junk Food - So Many Flavors to Savor 2022-11-22 17:00:00 Drawings Featuring Chisled Clavicles - Going For the Throat 2022-11-21 18:00:00

WebIncertae sedis (Latin for 'of uncertain placement') or problematica is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by incertae familiae (of …

WebChord may refer to: . Chord (music), an aggregate of musical pitches sounded simultaneously Guitar chord a chord played on a guitar, which has a particular tuning; Chord (geometry), a line segment joining two points on a curve Chord (astronomy), a line crossing a foreground astronomical object during an occultation which gives an indication …

WebConvergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy.The recurrent evolution of …

WebJul 29, 2017 · Waking up in a hero's body is one thing, being a hero is another. SI, where Peter Parker's body is taken over and the new owner realizes the world needs a hero, it needs a Spider-man.

WebIt is a chordate, and it has been argued that it is a vertebrate, It is 28 mm long and 6 mm high, and is among the oldest possible craniates. ... The researchers of the paper commented that it "is difficult to say whether this character distribution implies that Tiktaalik is autapomorphic, that Panderichthys and tetrapods are convergent, or ...

WebA microbiome (from Ancient Greek μικρός (mikrós) 'small', and βίος (bíos) 'life') is the community of microorganisms that can usually be found living together in any given habitat.It was defined more precisely in 1988 by Whipps et al. as "a characteristic microbial community occupying a reasonably well-defined habitat which has distinct physio …

WebIn biology, a phylum (/ ˈ f aɪ l əm /; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class.Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent. Depending on definitions, the animal kingdom …