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XIV.—The Restoration of an Ancient British Race of Horses

Published online by Cambridge University Press:  15 September 2014

J. C. Ewart
Affiliation:
University of Edinburgh
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Extract

In a work published in 1846, Professor Owen figured two upper molars of a small member of the Equidæ family which lived in the south of England along with the mammoth. A study of these and other molars led Owen to conclude that the small equine which lived in England in prehistoric times was either an ass or a zebra. Assuming that the small Oreston fossil equine had “callosities on the fore legs only, the tail furnished with a terminal brush, and a longitudinal dorsal line,” Owen gave it the name Asinus fossilis. In support of the view that a “wild ass or quagga” as well as a wild horse and a wild boar entered “into the series of British Pliocene hoofed mammalia,” Owen mentions that he had seen a fossil second phalanx or pastern bone of a small species of Equus about the size of the zebra from the Pliocene crag at Thorpe, and that Dr Mantell had described teeth and bones of “a small species about the size of a Shetland pony“ from the super-cretaceous drift deposit at Brighton—the deposit which, owing to the abundance of mammoth bones, is known as the “Elephant Bed.”

Type
Proceedings
Copyright
Copyright © Royal Society of Edinburgh 1910

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References

page 291 note * A History of British Fossil Mammals and Birds, figs. 157 and 158, p. 396.

page 291 note † These molars (m. 2 and m. 3) were found in a cavernous fissure at Oreston near Plymouth. Similar molars came from the drift at Chatham and Kesingland in Suffolk.

page 291 note ‡ Loc. cit., p. xxiv.

page 291 note § Medals of Creation, 1844, vol. ii. p. 40.

page 293 note * This metatarsal belonged to a stout race about 12 hands high, now probably represented by thick-set Iceland ponies of the “forest“ type.

page 294 note * As the animal to which the very small first molar from Oreston belonged either died or was killed when about a year old, it may have been an unusually poorly developed member of its race.

page 294 note † For having the small first molar from Oreston sectioned, and for many other obligations, I am indebted to Dr Smith Woodward F.R.S., Keeper of the Palæontological Department of the British (Natural History) Museum.

page 295 note * Boule, Marcellin, “Equidés Fossiles.” Extrait du Bull. de la Soc. Géol. de France, 3e série, tome xxvii., 1899.Google Scholar

page 296 note * A metatarsal found at Spandau near Berlin measures 237 mm., and has a width at the middle of the shaft of 25 mm. In this Bronze age cannon bone (which belonged to a horse about 12·1 hands high) the length is 9·48 times the width, as in a very fine-boned small Arab which I received some years ago from Mr W. Scawen Blunt.

page 297 note * The examination of cannon bones of slender-limbed ponies of a known size indicates that in a 9 hands pony the metacarpal measures 140 mm. to 145 mm., and the metatarsal 175 mm. to 180 mm., and that as a rule each hand (4 inches) added to the height at the withers implies an increase of 20 mm. to the length of the cannon bones. Hence, when the metacarpal measures 160 mm. the height may be estimated at 10 hands, when 180 mm. at 11 hands, when 200 mm. at 12 hands, and when 220 mm. at 13 hands. But in a slenderlimbed 14 hands horse the metacarpal may be only 235 mm., in a 15 hands horse 250 mm., and in a 16 hands horse 265 mm. In coarse-limbed horses and ponies the metacarpale are relatively shorter than in fine-limbed breeds, e.g. in a 15 hands horse of the “forest type“ the metacarpal may only measure 240 mm.

page 299 note * This Southern variety may be regarded as the ancestor of Prof. Ridgeway's “fine bay horse of North Africa,” Equus caballus libycus.

page 301 note * For the opportunity of studying the skeleton of “Eric“ I am indebted to Mr Charles M. Douglas of Auchlochan, Lesmahagow.

page 303 note * This pony, bred by the late Rev. J. Ingram, Unst, probably includes an Arab or a Barb amongst its ancestors.

page 306 note * The Century Magazine, vol. lxix., No. 1, 1904.

page 306 note † The Woburn Library, British Mammals, pp. 276–277, 1903.

page 306 note ‡ In zebra-hybrids there is often a narrow light stripe at each side of the dorsal band, continuous with light hairs at each side of the mane.

page 310 note * Distance from line connecting supra-orbital foramina to alveolar point.