Rana skeleton

Autor:

George A. Boulenger

Credit:

The fauna of British India including Ceylon and Burma. Reptilia and Batrachia. Taylor and Francis, London (fig. 127, p. 434 therein)

Krótki link:

https://plwiki.pl/b/8c183

źródło:

Wikimedia Commons

Wymiary:

723 x 1069 Pixel (269246 Bytes)

Opis:

Historical drawing of the skeleton of the common water frog Pelophylax “esculentus” (LINNAEUS, 1758). Top left corner: skull in ventral view. Top center: pectoral girdle in ventral view. Top right: mandible. Also note that

• the bone labelled “Astragalus” (a) is not entirely homologous to the astragalus in amniotes and today is usually referred to as tibiale.
• the bone labelled “Calcaneum” (ca) is not entirely homologous to the calcaneum in amniotes and today is usually referred to as fibulare.
• the bone labelled “Præcoracoid” (pco) is actually the clavicle.
• the structure labelled “Rudiment of sixth toe” (VI) today is usually referred to as prehallux and that its nature as a rudiment is controversial.

Licencja:

Public domain