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Jul 6, 2011 · If ruminant headgear has a single developmental and evolutionary origin, how have the adult structures arisen; independently from headgear-less intermediates that possessed the basic genetic and developmental architecture, though unexpressed? Or did adult structures evolve through a series of transitional forms of headgear?
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hypothesized that ruminant headgear had a single history,...
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May 20, 2024 · FULL STORY. From the small ossicones on a giraffe to the gigantic antlers of a male moose -- which can grow as wide as a car -- the headgear of ruminant hooved mammals is extremely diverse, and...
May 21, 2024 · The research revealed that all ruminant headgear, including horns, antlers, ossicones, and pronghorns, likely evolved from paired bony outgrowths near the frontal bones of the skull. These structures originate from the cranial neural crest, an embryonic cell layer essential for forming the face.
May 27, 2024 · A genomic study supports the hypothesis that the evolution of ruminant horns and antlers was not independent. From the small ossicones on a giraffe to the gigantic antlers of a male moose—which can grow as wide as a car—the headgear of ruminant hooved mammals is extremely diverse, and new research
Oct 7, 2011 · We collectively term ruminant cranial appendages ‘headgear’; this includes four extant forms: antlers (in cervids), horns (in bovids), pronghorns (in pronghorn antelope) and ossicones (in giraffids).
- Edward Byrd Davis, Katherine A. Brakora, Andrew H. Lee
- 10.1098/rspb.2011.0938
- 2011
- 2011/10/10
hypothesized that ruminant headgear had a single history, evolving from ossicone-like tubercles in the common ancestor either of all ruminants or the Pecora, ruminants above tragulids (figure 1a). Most researchers hypothe-sized that the antler pedicle was homologous to the entire ossicone, horn or pronghorn [26,49,50]. Consequently,
Oct 7, 2011 · We collectively term ruminant cranial appendages 'headgear'; this includes four extant forms: antlers (in cervids), horns (in bovids), pronghorns (in pronghorn antelope) and ossicones (in giraffids).
