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 ...
(ii) The longevity hypothesis proposes that long-lived or late reproducing species will have lower rates of molecular evolution [114], as they are expected to have more effective DNA repairing mechanisms [115]. In most cases, maximum longevity data is derived from captive specimens, which have ...
The Snowball hypothesis proposes that sometime during the Cryogenian period, about 700 million years ago, the Earth's surface was entirely covered by ice. This theory was first proposed by an American geobiologist Joseph Kirschvink.Answer and Explanation: ...
This speaks in favour of the “anthropogenic” hypothesis, suggesting the establishment of secondary birch forests and spread of forest-steppe species in the deforested open landscapes. A reduction in human impact led to forest recovery. Finally, pollen data clearly show that the modern forest-...
(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 [...
This suggests that the Super-Horde was also present in the late Archaean supercontinent Kenorland. Although there are no systematic paleomagnetic data for the reconstruction of Archaean Summary and conclusions This study proposes a new configuration of the long-lived Mesoproterozoic supercontinent ...
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...