@bio_sapiens A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura. The origins and evolutionary relationships between the three main groups of amphibians are hotly debated. A molecular phylogeny based on rDNA analysis dating from 2005 suggests that salamanders and caecilians are more closely related to each other than they are to frogs and the divergence of the three groups took place in the Paleozoic or early Mesozoic before the breakup of the supercontinent Pangaea and soon after their divergence from the lobe-finned fishes. This would help account for the relative scarcity of amphibian fossils from the period before the groups split.Another molecular phylogenetic analysis conducted about the same time concluded that lissamphibians first appeared about 330 million years ago and that the temnospondyl-origin hypothesis is more credible than other theories. The neobatrachians seemed to have originated in Africa/India, the salamanders in East Asia and the caecilians in tropical Pangaea. Frog fossils have been found on all of the earth's continents. In 2020, it was announced that 40 million year old helmeted frog fossils had been discovered by a team of vertebrate paleontologists in Seymour Island on the Antarctic Peninsula, indicating that this region was once home to frogs related to those now living in South American Nothogagus forest. ______________________________ P H O T O : @a.sewoon ______________________________ PLEASE FOLLOW @bio_sapiens TO SUPPORT US IN SAVING BIODIVERSITY Tag a #Frog lover Please use hashtag #biosapiens #wildlife#facts#biodiversity#italy#photooftheday#bevegan#animalovers#animals#Americas#africanimals#birdphotography#biosapiens#wildlifephotography#environment#photography#animalplanet#animals_magic#bbcearth#tree#Australia#SouthAmerica#forest#earth#noplanetb#Africa#india#germany#Japan#frogs https://www.instagram.com/p/CHKloBoj7QmxynRUFHY-icL58nX6dK6grY-C3Q0/?igshid=1sqim5aa1yb9s
