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Vieraella is an extinct genus of frogs from the Lower Jurassic (Early Pliensbachian to Toarcian) Roca Blanca Formation of Argentina, and one of the oldest true frogs known. . This genus is known by a single exceptionally well-preserved specimen, P.V.L. 2188, with at least eight presacrals vertebrae, free ribs, ulna and radius not fused, bony skull with some discoglossid charac
Boophis jaegeri, also called the green skeleton frog, is a species of frog in the family Mantellidae. It is endemic to Madagascar . Its natural habitats are subtropical or tropical moist lowland forests , rivers , plantations , and heavily degraded former forest.
It is monotypic, being represented by the single species, Myobatrachus gouldii, also known as the turtle frog. It gets its name from the resemblance to a shell-less chelonian, which is a type of turtle. It is described to have an extremely small narrow head, short limbs, and a round body. They can get up to 45 millimetres (1.8 in) long. [2]
The following other wikis use this file: Usage on bxr.wikipedia.org Ухаанта хүн; Usage on ca.wikipedia.org Ésser humà; Usage on es.wikipedia.org
English: The pectoral girdle is the set of bones which connect the upper limb to the axial skeleton on each side. It consists of the clavicle and scapula in humans and, in those species with three bones in the pectoral girdle, the coracoid.
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]
Rana (derived from Latin rana, meaning 'frog') is a genus of frogs commonly known as the Holarctic true frogs, pond frogs or brown frogs.Members of this genus are found through much of Eurasia and western North America.
This stylised bird skeleton highlights the synsacrum Pelvis of a Gull; formed by the Synsacrum (fused vertebrae placed centrally) and the two innominate bones either side. The synsacrum is a skeletal structure of birds and other dinosaurs, in which the sacrum is extended by incorporation of additional fused or partially fused caudal or lumbar ...