A new genus of horse from Pleistocene North America
AuthorHeintzman, Peter D.; Zazula, Grant D.; MacPhee, Ross D. E.; Scott, Eric; Cahill, James A.; McHorse, Brianna K.; Kapp, Joshua D.; Stiller, Mathias; Wooller, Matthew J.; Orlando, Ludovic; Southon, John R.; Froese, Duane G.; Shapiro, Beth
The extinct ‘New World stilt-legged’, or NWSL, equids constitute a perplexing group of Pleistocene horses endemic to North America. Their slender distal limb bones resemble those of Asiatic asses, such as the Persian onager. Previous palaeogenetic studies, however, have suggested a closer relationship to caballine horses than to Asiatic asses. Here, we report complete mitochondrial and partial nuclear genomes from NWSL equids from across their geographic range. Although multiple NWSL equid species have been named, our palaeogenomic and morphometric analyses support the idea that there was only a single species of middle to late Pleistocene NWSL equid, and demonstrate that it falls outside of crown group Equus. We therefore propose a new genus, Haringtonhippus, for the sole species H. francisci. Our combined genomic and phenomic approach to resolving the systematics of extinct megafauna will allow for an improved understanding of the full extent of the terminal Pleistocene extinction event.
PublishereLife Sciences Publications
CitationHeintzman, P. D., Zazula, G. D., MacPhee, R. D. E., Scott, E., Cahill, J. A., McHorse, B. K., Kapp, J. D. … Shapiro, B. (2017). A new genus of horse from Pleistocene North America. eLIFE, 6. https://doi.org/10.7554/eLife.29944
Showing items related by title, author, creator and subject.
Pseudocalanus (Copepoda: Calanoida) of the North Atlantic Ocean : species composition, environmental preferences and phylogeography Aarbakke, Ole Nicolai S (Doctoral thesis; Doktorgradsavhandling, 2013-06-25)The seven species of the genus Pseudocalanus (Copepoda: Calanoida) are difficult to identify because of very small interspecific, and comparatively large intraspecific, divergence of morphologic and morphometric traits. Thus, despite the fact that Pseudocalanus spp. are among the most abundant metazoans in the world, our knowledge of them at the species level is limited. The main objective of this ...
Circumpolar Arctic vegetation: a hierarchic review and roadmap toward an internationally consistent approach to survey, archive and classify tundra plot data Walker, D. A.; Daniels, F.J.A.; Alsos, Inger Greve; Bhatt, U S; Breen, A L; Buchhorn, M; Bultmann, H; Druckenmiller, L A; Edwards, M E; Ehrich, Dorothee; Epstein, Howard E.; Gould, W.A.; Ims, Rolf Anker; Meltofte, H; Raynolds, M. K.; Sibik, J; Talbot, SS; Webber, P. J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-10)Satellite-derived remote-sensing products are providing a modern circumpolar perspective of Arctic vegetation and its changes, but this new view is dependent on a long heritage of ground-based observations in the Arctic. Several products of the Conservation of Arctic Flora and Fauna are key to our current understanding.Wereview aspects of the PanArctic Flora, the Circumpolar Arctic Vegetation ...