File:The American Museum journal (c1900-(1918)) (18133216666).jpg

Title: The American Museum journal
Identifier: americanmuseumjo06amer (find matches)
Year: c1900-(1918) (c190s)
Authors: American Museum of Natural History
Subjects: Natural history
Publisher: New York : American Museum of Natural History
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: Biodiversity Heritage Library

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124 THE A ME RICA N M USE UM JO URN A L other bones were collected for the Museum, and these are but a small fraction of the entire number in the fissure. More than sixty different species of mammals, birds and reptiles, chiefly of a forest fauna, have been recognized, some of which still live in the same region. Many others now inhabit near and remote northern parts of the continent, while twenty-four species are entirely extinct. The fissure has thus given us a record of some of the kinds of animals in Arkansas at the time of the most southern extent of the great ice-sheet of the Glacial Period. A systematic series illustrating the different species found in this interesting fissure is in process of installation in a case which has been placed temporarily in the Dinosaur Hall.
Text Appearing After Image:
THE SHETLAND PONY SKELETON. HE series of specimens in the Horse Alcove of the Hall of Vertebrate Palaeontology has been enriched by a beautiful skeleton of an adult Shetland pony, which was prepared and mounted.at the Museum by Mr. S. H. Chubb. The skeleton represents the animal as if grazing, w^hich admits the display of great skill in the adaptation of the bones to the necessities of the case. The downward reach of the head causes the backbone to be con- siderably arched, and this necessitates raising the angle of the pelvis several degrees toward the vertical, increasing the length of the hind limbs and tilting the body forward. The head is turned to the right, producing interesting curves in the back- bone. The attitude of all the bones has been determined from a most careful study of photographs of the animal while alive. An examination of the skeleton shows that the weight of the body falls on the right front and the left hind foot, bringing them both very near the median line, modifying the position of the scapulsE' and elevating the left side of the pelvis. The skeleton of the Shetland pony has been placed beside that of the great Percheron draft horse, marking the extremes of development produced by artificial selection. The contrast between the two animals is well shown in the following table of measurements:

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