horned lizard


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Related to horned lizard: Desert horned lizard

horned lizard

or

horned toad,

broad, flat-bodied lizards of the genus Phrynosoma, found in arid regions from extreme SW Canada to Guatemala. There are several species in the United States W of the Mississippi. The body is 3 to 5 in. (7.6 to 12.7 cm) long; it has a short, thin tail, a short neck, and short legs. There are spines on the head, sides, and back. Horned lizards are protectively colored, usually in dull grays and browns. They feed on insects, especially ants, and are often found buried in the sand, with only their heads exposed. In some species the female lays eggs; in others the eggs are incubated internally and the young are born alive. When alarmed, members of some species eject a thin stream of blood from the nictitating membrane of the eye for a distance of several feet. Horned lizards are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Reptilia, order Squamata, family Iguanidae.
References in periodicals archive ?
5 (1989-91) year study on the Coast Horned Lizard, Phrynosoma coronatum (=CHL), was conducted in Orange, Riverside, San Diego, and San Bernardino Counties, California, hence within the range of what was formerly known as P.
In light of its dietary composition, Phrynosoma douglasii does not appear to be as highly myrmecophagous compared to other horned lizard species, particularly those outside of the short horned lizard clade.
The knowledge they gain could prevent the Texas horned lizard from wandering onto the federal protection list.
The Texas horned lizard, one of 14 similar species from southern Canada to Central America, live primarily in the deserts and plains of Kansas, New Mexico, Oklahoma and Texas.
There is a specimen record of a horned lizard (Phrynosoma) from Union County in southeastern South Dakota that almost certainly represents a pet release.
The desert horned lizard (Phrynosoma platyrhinos Girard) and the smaller short-horned lizard (P douglassi Bell) both occur in southern Idaho and northern Utah, with P douglassi also ranging further north and into higher elevations (Nussbaum et al.
Evolutionary osteology and relationships of the horned lizard genus Phrynosoma (family Iguanidae).
Quantifying ecological, morphological, and genetic variation to delimit species in the coast horned lizard species complex (Phrynosoma).
He and his colleagues compared the length of the horns on dangling remains of horned lizards with horn lengths of lizards still alive.
The Texas horned lizard occurs in the arid and semiarid low- and middle-elevation habitats from southeastern Arizona south through northern Mexico and north to central Kansas (Sherbrooke, 2003; Stebbins, 2003; Hodges, 2009).
Flat-Tailed horned Lizard (Phryosoma mcallii) The western edge of the Sonoran Desert in southeastern California, southwestern Arizona, and adjoining portions of Baja California and Sonora, Mexico is one of the hottest and driest parts of North America.
Horned Lizard (Phrynosoma) phylogeny inferred from mitochondrial genes and morphological characters: understating conflicts using multiple approaches.