Preferred Label : digit;
Uberon definition : A subdivision of the autopod that has as part a series of phalanges together with
associated vasculature, musculature, integument and nerves. It is continuous with
the metapodial subdivision of the autopod, but does not include the metapodials. In
species such as humans, fully formed digits are distinct, whereas in other species
the digits may be connected by interdigital webbing, or may be completely unseparated
(for example, in cetaceans).;
Uberon synonym : digit (phalangeal portion) plus soft tissue; limb digit; acropodial unit;
Uberon Homology note : Our reinterpretation of the distal fin endoskeleton of Panderichthys removes the final
piece of evidence supporting the formerly popular hypothesis that tetrapod digits
are wholly new structures without homologues in sarcopterygian fish fins. This hypothesis,
which was based partly on the complete absence of plausible digit homologues in Panderichthys
(then the closest known relative of tetrapods), has already been called into question
by the discovery of digit-like radials in Tiktaalik and the fact that Hox gene expression
patterns closely resembling those associated with digit formation in tetrapods occur
in the distal fin skeletons of paddlefish and Australian lungfish. Our new data show
that Panderichthys is not an anomaly: like Tiktaalik and other fish members of the
Tetrapodomorpha, it has distal radials that can be interpreted as digit homologues.[well
established][VHOG];
Origin ID : 0002544;
UMLS CUI : C0582802;
Automatic exact mappings (from CISMeF team)
- Currated CISMeF NLP mapping
- Semantic type(s)
- UMLS correspondences (same concept)
- Uberon cross reference
- contributes to morphology of
- has part
- part of
A subdivision of the autopod that has as part a series of phalanges together with
associated vasculature, musculature, integument and nerves. It is continuous with
the metapodial subdivision of the autopod, but does not include the metapodials. In
species such as humans, fully formed digits are distinct, whereas in other species
the digits may be connected by interdigital webbing, or may be completely unseparated
(for example, in cetaceans).
