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In terrestrial vertebrates, digitigrade (/ ˈ d ɪ dʒ ɪ t ɪ ˌ ɡ r eɪ d /) [1] locomotion is walking or running on the toes (from the Latin digitus, 'finger', and gradior, 'walk'). A digitigrade animal is one that stands or walks with its toes (phalanges) on the ground, and the rest of its foot lifted.
Skeletons of a human and an elephant. Comparative foot morphology involves comparing the form of distal limb structures of a variety of terrestrial vertebrates.Understanding the role that the foot plays for each type of organism must take account of the differences in body type, foot shape, arrangement of structures, loading conditions and other variables.
The leg of an unguligrade mammal also includes the phalanges, the finger and toe bones. Among extinct animals, most early mammals such as pantodonts were plantigrade. A plantigrade foot is the primitive condition for mammals; digitigrade and unguligrade locomotion evolved later.
Occasionally, the genes that code for longer extremities cause a modern cetacean to develop miniature legs (known as atavism). The main method of moving is an up-and-down motion with the tail fin, called the fluke , which is used for propulsion , while the pectoral fins together with the entire tail section provide directional control.
The anatomy of bird legs and feet is diverse, encompassing many accommodations to perform a wide variety of functions. [ 1 ] Most birds are classified as digitigrade animals, meaning they walk on their toes rather than the entire foot.
The skeleton of Pakicetus, an extinct digitigrade mammal. In birds with anisodactyl or heterodactyl feet, the hallux is opposed or directed backwards and allows for grasping and perching. While the thumb is often mentioned [ by whom? ] as one of the signature characteristics in humans, this manual digit remains partially primitive and is ...
An early fursuit worn by former Disney mascot wearer Robert Hill, based on the feminine character "Hilda the Bamboid", appeared at the first ever furry convention, ConFurence 0, in 1989, but most furries of the time simply wore ears and tails, influenced by their intersection with the anime and sci-fi fandoms. [2]
The cerebellum is thought to receive sensory information (e.g. visual, vestibular) about actual stepping patterns as they occur and compare them to the intended stepping pattern. When there is a discrepancy between these two signals, the cerebellum determines the appropriate correction and relays this information to the brainstem and motor cortex.