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Fossil frogs are rarely found as multiple articulated skeletons, therefore the discovery of this taxon has provided important insight into anuran evolution. [5] [6] The holotype, IVPP V11525, is known from a nearly complete skeleton exposed in a dorsal view on a shale slab.
The quadrate bone is a skull bone in most tetrapods, including amphibians, sauropsids (reptiles, birds), and early synapsids. In most tetrapods, the quadrate bone connects to the quadratojugal and squamosal bones in the skull, and forms upper part of the jaw joint.
Temporal fenestrae in relation to the other skull openings in the dinosaur Massospondylus, a type of diapsid. The supratemporal fenestra, also called the upper temporal fenestra, is positioned above the other fenestra and is exposed primarily in dorsal (top) view. In some reptiles, particularly dinosaurs, the parts of the skull roof lying ...
Kermit the Frog meet Kermitops gratus, the most recent ancient amphibian to be identified after examination of a tiny fossilized skull that once sat unstudied in the Smithsonian fossil collection ...
They have an average skull width of 12.02±0.36 mm and an average skull length of 9.38±0.14 mm. [8] The dorsal body of H. japonica is green/brown and the ventral body is white. [5] H. japonica is also characterized by a dark spot on the upper lip below the eye. [5] Female H. japonica, on average, are larger in size compared to male H. japonica ...
The skull of the dromaeosaurid dinosaur Dromaeosaurus, with the quadratojugal (light blue) labelled. Several Triassic reptiles reacquire the lower temporal bar, albeit with the jugal forming most of the bar's length. In these reptiles, the quadratojugal is a small L- or T-shaped bone at the rear edge of the skull.
Compared to other dissorophid temnospondyls, Platyhystrix’s skull is rather large (over 19 cm long along midline), as well as long and narrow when analyzed in dorsal view. There is a wide variety in dermal sculpturing which occurs along the dorsal and lateral portions of the skull.
The squamosal is a skull bone found in most reptiles, amphibians, and birds. In fishes, it is also called the pterotic bone. [1] In most tetrapods, the squamosal and quadratojugal bones form the cheek series of the skull. [2] The bone forms an ancestral component of the dermal roof and is typically thin compared to other skull bones. [3]