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By 1960, the Houston toads were unable to be located and in 1970, the Houston toad was federally listed as an endangered species. [16] It was determined that they were extirpated from the Houston, Texas area by the 1960s, likely coincident with the severe drought of the 1950s and concurrent development of its forested habitat in that region. A ...
Gray tree frog: Found in the eastern-central portion of the state, excluding the most eastern fifth [40] LC [41] Pseudacris clarkii: Spotted chorus frog: Found in central Texas [42] LC [43] Pseudacris crucifer: Spring peeper: Found in eastern Texas [44] LC [45] Pseudacris fouquettei: Cajun chorus frog: Found throughout eastern Texas [46] LC [47]
The Texas toad (Anaxyrus speciosus) is a species of medium-sized (to 9 cm (3.5 in)) toad that occurs in the southern United States and northern Mexico. [ 2 ] [ 3 ] It breeds in temporary water pools after heavy rains.
Rio Grande leopard frog (Lithobates berlandieri), from Cameron County, Texas, USARio Grande leopard frogs grow from 2.2 to 4.5 inches (5.6 to 11.4 cm) in length. They are usually tan, brown, or pale green in color, with distinctive black spotting with prominent light-colored ridges down either side of their backs.
The features uniting the Lissamphibia were first noted by Ernst Haeckel, even though in Haeckel's work, Lissamphibia excluded the caecilians. [ 6 ] [ 11 ] Nevertheless, Haeckel considered the caecilians to be closely related to what he called Lissamphibia (gr. λισσός, smooth), which is now called Batrachia and includes frogs and salamanders .
Some 50 to 100 extant species are now placed in this genus by various authors; many other species formerly placed in Rana are now placed elsewhere. Frost [3] restricted Rana to the Old World true frogs and the Eurasian brown and pond frogs of the common frog R. temporaria group, [4] although other authors disagreed with this arrangement.
The Batrachia / b ə ˈ t r eɪ k i ə / are a clade of amphibians that includes frogs and salamanders, but not caecilians nor the extinct allocaudates. [1] The name Batrachia was first used by French zoologist Pierre André Latreille in 1800 to refer to frogs, but has more recently been defined in a phylogenetic sense as a node-based taxon that includes the last common ancestor of frogs and ...
The earliest salientian yet discovered is Triadobatrachus massinoti, known from a single fossil specimen found in Madagascar. It dates back to the Early Triassic, about 250 million years ago. It had many frog-like features, but had 14 presacral vertebrae, while modern frogs have nine or 10.