Search results
Results from the WOW.Com Content Network
The Equisetales existed alongside the Sphenophyllales, but diversified as that group disappeared into extinction, gradually dwindling in diversity to today's single genus Equisetum. The organisms first appear in the fossil record during the late Devonian, [ 1 ] a time when land plants were undergoing a rapid diversification, with roots, seeds ...
This was confirmed in a genetic study done in 2017, which subsumed all the specimens into the species E. francisci which was placed outside all extant horse species in the new genus Haringtonhippus [19], although its placement as a separate genus was subsequently questioned. [20] A separate genus of horse, Hippidion existed in South America. [21]
Any member of the genus Equus. [1]: 72 equitation 1. The skill of riding a horse. [1]: 72–73 2. A term for competitive horse show events judged on the rider's ability instead of that of the horse. [1]: 72 equus The genus including the horse, donkey, zebra and all other surviving members of the family Equidae. [8]: 173 ergot 1.
Thoroughbred is a specific breed of horse, while a "purebred" is a horse (or any other animal) with a defined pedigree recognized by a breed registry. [175] Horse breeds are groups of horses with distinctive characteristics that are transmitted consistently to their offspring, such as conformation , color, performance ability, or disposition.
The extinct Alcelaphine genus Paramularius, which was the same in size as the hartebeest, is believed to have come into being in the Pliocene, but became extinct in the middle Pleistocene. [6] Several genera of Hippotraginae are known since the Pliocene and Pleistocene.
Wild horse Temporal range: earliest Middle Pleistocene -Recent 0.8–0 Ma Pre๊ ๊ O S D C P T J K Pg N ↓ Top left: Equus ferus caballus (horses) Top right: Equus ferus przewalskii (Przewalski's horse) Below left: Equus ferus ferus † (tarpan) Below right: Equus ferus fossil from 9100 BC Conservation status Endangered (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom ...
Skeleton of a horse. Ungulates were in high diversity in response to sexual selection and ecological events; most ungulates lack a collar bone. [49] Terrestrial ungulates were for the most part herbivores, with some of them being grazers. However, there were exceptions to this as pigs, peccaries, hippos and duikers were known to have an ...
Systematic biology (hereafter called simply systematics) is the field that (a) provides scientific names for organisms, (b) describes them, (c) preserves collections of them, (d) provides classifications for the organisms, keys for their identification, and data on their distributions, (e) investigates their evolutionary histories, and (f ...