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Indobatrachus (Greek for "Indian frog") is an extinct genus of frog known from the Early Paleocene of India. [1] [2] It contains a single species, Indobatrachus pusillus.Two other species, I. trivialis and I. malabaricus, were also previously described, but these have since been synonymized with I. pusillus.
The most common fossil at the site are of crocodiles and giant trionychidae turtles which have become extinct in Australia. [4] Fossils from Murgon include the world's oldest songbirds , the oldest Australian marsupials , and the only fossils of leiopelmatid frogs outside of the Saint Bathans Fauna .
Rheobatrachus, whose members are known as the gastric-brooding frogs or platypus frogs, is a genus of extinct ground-dwelling frogs native to Queensland in eastern Australia. The genus consisted of only two species, the southern and northern gastric-brooding frogs, both of which became extinct in the mid-1980s.
Australia separated from Gondwana 99 Ma, and initially remained warm and humid with rainforest vegetation. Inland Australia had systems of rivers and lakes with abundant wildlife. Fossil birds, platypus, frogs and snakes are present from this period. From 30 Ma there was a period of global cooling, and from 15 Ma the Antarctic ice sheet formed.
The oldest-known frog fossils date to even earlier. Scientists in Argentina have discovered excellently preserved fossil remains of the oldest-known tadpole, the larval stage of a large frog ...
The southern gastric-brooding frog was discovered in 1972 and described in 1973, [2] though there is one publication suggesting that the species was discovered in 1914 (from the Blackall Range). [ 3 ] [ 4 ] Rheobatrachus silus was restricted to the Blackall Range and Conondale Ranges in southeast Queensland , north of Brisbane , between ...
The fossil evidence found during the Cretaceous-Paleogene extinction event could not determine the effects upon the frogs, due to the lack of fossils. Increased forestation erupted after this extinction, possibly leading to more arboreal adaptations of these anurans to be best suited for this habitat.
The Amphibians of Western Australia are represented by two families of frogs. Of the 78 species found, most within the southwest , 38 are unique to the state. 15 of the 30 genera of Australian frogs occur; from arid regions and coastlines to permanent wetlands.