«These results offer new perspectives in modeling
how tetrapods may have taken their first steps onto land, by considering the unique contributions of both the forelimbs and hind limbs,» said lead author Sandy Kawano, a postdoctoral fellow at NIMBioS.
Not exact matches
Fossil finds from this transitional period are too few to explain why or
how it occurred, or exactly when the first fully terrestrial
tetrapods evolved.
Through her discussion of when, where, and
how vertebrates first came ashore, Clack offers an up - to - date account of our understanding of the fish to
tetrapod transition, one of the classic evolutionary stories.
Because these genes have the same function in zebrafish, humans, and other
tetrapods, it should help researchers further understand
how our ancestors left the water and evolved limbs from fins.
Emma Dunne, from the University of Birmingham's School of Geography, Earth and Environmental Sciences, said: «This is the most comprehensive survey ever undertaken on early
tetrapod evolution, and uses many newly developed techniques for estimating diversity patterns of species from fossil records, allowing us greater insights into
how early
tetrapods responded to the changes in their environment.»
Despite this being a catastrophic event for plants, it has been unclear
how this affected the early
tetrapod community.
Salamanders are particularly good organisms for studying
how locomotion onto land evolved, as their anatomy and ecology is similar to the earliest
tetrapods.
The findings are reported by researchers from Tokyo Institute of Technology (Tokyo Tech), the Centre for Genomic Regulation (CRG, Barcelona) and their collaborators in the journal eLife and give new insight into
how fish evolved to live on land in the form of early
tetrapods.
«What we're seeing in lungfish is a very nice example of
how bottom - walking in fish living in water can easily come about in a very
tetrapod - like pattern.»