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Lop rabbit or lop-eared rabbit refers to any rabbit with ears that droop, as opposed to being carried erect. A number of rabbit breeds (listed below) are characterized by such lop ears. Abnormalities in the skull of a half-lop rabbit were studied by Charles Darwin in 1868.
Cephalic index viewed from above the head. The cephalic index or cranial index is a number obtained by taking the maximum width (biparietal diameter or BPD, side to side) of the head of an organism, multiplying it by 100 and then dividing it by their maximum length (occipitofrontal diameter or OFD, front to back).
The hind foot measures 8.5–10 cm (3.3–3.9 in) in length, while the ears are 6.5–7.5 cm (2.6–3.0 in) long from the occiput. [ 26 ] Size and weight vary according to food and habitat quality, with rabbits living on light soil with nothing but grass to feed on being noticeably smaller than specimens living on highly cultivated farmlands ...
Fossil occurrences of leporids and ochotonids and global environmental change (climate change, C 3 /C 4 plants distribution) [2]. The lagomorphs (/ ˈ l æ ɡ ə m ɔː r f /) are the members of the taxonomic order Lagomorpha, of which there are two living families: the Leporidae (rabbits and hares) and the Ochotonidae ().
This type of skull was inherited by the first amniotes (fully terrestrial tetrapods), which evolved in the Carboniferous. This type of skull roof without any above openings behind the eyes is called anapsid. Today, the only reptiles with anapsid skulls are turtles, though this is likely a case of secondary loss of the temporal fenestrae. [5]
These frills, which overhang the neck and extend past the rest of the skull is a diagnostic trait of ceratopsians. The recognizable skull domes present in pachycephalosaurs were formed by the fusion of the frontal and parietal bones and the addition of thick deposits of bone to that unit. [4]
The base of skull, also known as the cranial base or the cranial floor, is the most inferior area of the skull. It is composed of the endocranium and the lower parts of the calvaria . Structure
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]