References in periodicals archive ?
Navicular bones of the heftier, 519-kg Equus occidentalis that have been recovered from the La Brea tar pits in Los Angeles show a higher rate of equine navicular syndrome.
In future studies, she hopes to analyze the navicular bones from recently, extinct species of South American horses, as well as the fossils of lightweight, primitive horses that ran on three toes rather than one.
Most equine veterinarians believe that the disease results when repeated stress cuts off blood flow to a small foot bone called the distal sesamoid, or the navicular bone.