from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any animal of the taxonomic family Equidae, including any equine (horse, zebra, ass, mule, etc.)
from The Century Dictionary and Cyclopedia
- n. A hoofed mammal of the family Equidæ.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. hoofed mammals having slender legs and a flat coat with a narrow mane along the back of the neck
Sorry, no etymologies found.
Years ago, the famous professor George Simpson wrote, “The most famous of all equid horse trends, ‘gradual reduction of the side toes,’ is flatly fictitious.”
For the record, the deal with horses in North America is that, while members of the genus Equus were numerous and important there in the Pleistocene, they later became extinct (to quote R. Dale Guthrie (2003): ‘equid species dominated North American late Pleistocene faunas in terms of abundance, geographical distribution, and species variety, yet none survived into the Holocene epoch’ (p. 169)).
Famously discovered by Harry Johnston and named by P.L. Sclater in 1901 (Johnston thought he was tracking down reports of a new forest-dwelling equid), Okapia is a short-necked forest-dwelling giraffid, though how typical it is in the grand scheme of giraffid diversity and evolution has proved controversial.
In the world of global wildlife conservation, Marwell is an important place, having played key roles in captive breeding and/or reintroduction schemes for Takhi Equus przewalskii (the equid formerly known as Przewalski's horse), Amur tiger Panthera tigris altaica (the felid formerly known as the Siberian tiger) and Scimitar-horned oryx Oryx dammah.
All these three are called zebroids – defined as a cross between a zebra and any other equid.
Several equid bones were found, all belonging to very small donkeys.
"The timing of these equid regional extinctions and accompanying evolutionary changes are poorly known," he said.
The amino acid sequence of latherin, determined from cDNA analysis, is highly conserved across four geographically dispersed equid species (horse, zebra, onager, ass), and is similar to a family of proteins only found previously in the oral cavity and associated tissues of mammals.
Similar procedures were used to obtain partial cDNA sequences from the other equid species, using additional primer sets designed to overlap those of the original primer positions to ensure that the final sequences were fully correct for each species.
We report here on biophysical and molecular characterization of surfactant-related properties of recombinant latherin, including the cloning of cDNAs encoding latherin from several species of equid, and show that the recombinant protein possesses strong surfactant activity associated with self-assembly of an interfacial surface layer.