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Goliath frog eggs and tadpoles are about the same size as other frogs despite their very large adult form. [citation needed] A lateral fold extends from the eye to the posterior portion of the tympanum. Their toes are fully webbed, with large interdigital membranes extending down to the toe tips. The second toe is the longest.
Diagnosis of a specific syndrome is based on family history, medical history, and a physical exam. Webbed toes are also known as "twin toes," "duck toes," "turkey toes," "tree toes" and "tiger toes." Severity can vary. Most cases involve the second and third toes but any number of toes can be involved.
Ground-dwelling frogs generally lack the adaptations of aquatic and arboreal frogs. Most have smaller toe pads, if any, and little webbing. Some burrowing frogs such as Couch's spadefoot (Scaphiopus couchii) have a flap-like toe extension on the hind feet, a keratinised tubercle often referred to as a spade, that helps them to burrow. [58]
The southern cricket frog has longer legs, with less webbing on the hind feet, and a more pointed snout, though northern cricket frogs have been observed with snouts indistinguishable from those of the southern species, [7] and the markings on the back of the thigh are typically more sharply defined than that of the northern cricket frog, [8 ...
The American spadefoot toads are of typical shape to most fossorial (or burrowing) frogs. They are round, with short legs and protruding eyes. As suggested by their name, these frogs have hard, keratinous protrusions present on their feet, which help them to dig. Like most fossorial frogs, they dig backwards into the ground. [1]
Romer's tree frog has a triangular but blunt snout with brown-spotted lips. Between the eyes is a dark bar, which extends to the eyelids. The hind legs are long, slender, and barred with irregular brown-to-black cross-bands. All digits have small toe pads, which allow the frog to hang on tree branches or leaves.
Dwarf frogs have four webbed feet. African clawed frogs have webbed hind feet while their front feet have autonomous digits. African dwarf frogs have eyes positioned on the side of their head, while African clawed frogs have eyes on the top of their heads. African clawed frogs have curved, flat snouts. The snout of an African dwarf frog is pointed.
The oldest fossil records of frogs more closely related to pipid frogs than to other extant frog families extends into the Early Cretaceous. The oldest known crown group pipids are Oumtkoutia and Pachycentrata from the Upper Cretaceous of Morocco and Niger, respectively. [9] Included taxa after A. M. Aranciaga Rolando et al. 2019 [10]