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Most people have clockwise scalp hair-whorls. Parietal whorls which are considered to be normal scalp patterns could be a single whorl or double whorls. Cases of triple parietal whorls are less common. Amar J. S. Klar conducted research to see if there was a genetic link between handedness and hair-whorl direction. He found that 8.4% of right ...
Unlike other caecilians, they have only primary annuli; these are grooves running incompletely around the body, giving the animal a segmented appearance. All other caecilians have a complex pattern of grooves, with secondary or tertiary annuli present. Also uniquely amongst tetrapods, the scolecomorphids lack a stapes bone in the middle ear. [4]
Eleutherodactylus corona is a species of frog in the family Eleutherodactylidae. It is endemic to the Massif de la Hotte, Haiti. [2] The specific name corona is derived from the Latin word for "crown" and refers to the distinctive tubercles on the top of the head of these frogs. [3] Common name Caye Paul robber frog has been coined for it. [2]
Triprion spinosus, also known as the spiny-headed tree frog, spiny-headed treefrog, spinyhead treefrog, coronated treefrog, and crowned hyla, is a species of frog in the family Hylidae. [4] It has a spotty distribution in Panama , Costa Rica , Honduras , and southern Mexico .
Scaphiophryne gottlebei, commonly known as the Malagasy rainbow frog, ornate hopper, rainbow burrowing frog, red rain frog or Gottlebe's narrow-mouthed frog, is one of the most highly decorated frogs from Madagascar. The primary threats to this endangered species are habitat loss and capture for the pet trade (now illegal). [1]
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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]