The most parsimonius vicariance hypothesis proposes that the stock leading to the Hyperoliidae and Rhacophoridae existed before Pangaea broke up. The sequence of fragmentation events leading to the present-day distribution started with the Seychelles, then Asia split from Africa+Madagascar, and ...
the Moon, was formed. The most common theory, known as the Giant Impact Hypothesis proposes that the Moon originated after a body the size of Mars (sometimes named Theia) struck the proto-Earth a glancing blow
It was also during this eon – roughly 4.48 billion years ago (or 70–110 million years after the start of the Solar System) – that the Earth's only satellite, the Moon, was formed. The most common theory, known as the "giant impact hypothesis" proposes that the Moon originated after ...
This is the ultimate origin question. The Big Bang is the scientific theory that proposes to answer this ultimate origin question. According to the Big Bang theory, the observable universe began in a singularity of infinite density and temperature at a specific moment in time some 13.8 billion y...
In particular, we aim to test the hypothesis that northward frontal movements in the ACC system correspond to a stronger RC flow and associated heat transport back into the Indian Ocean. Access through your organization Check access to the full text by signing in through your organization. ...
(Tree of Life) is monophyletic. This hypothesis, which corresponds to Darwin's "species theory No. 2" (see Figure4), has recently been corroborated by D. J. Theobald [30], based on protein sequence and other molecular data. The author concluded that "the last universal common ancestor [...
In a recent publication it was documented that the break-up of the super-continent Pangaea (which existed from the Perminan into the Jurassic, ca. 299 to 200 million years ago), due to plate tectonics, accounts for the evolutionary diversification of many groups of animal, such as dinosaurs...
(2) The Procera hypothesis proposes a salamander–caecilian sister relationship [55,56,57]. (3) I also examined the frog–caecilian sister relationship, although no previous study has suggested the existence of this relationship. The last two hypotheses assume a paraphyletic origin for Liss...