Notice of new reptiles from the Laramie formation / by O.C. Marsh.

  • Marsh, Othniel Charles, 1831-1899.
Date:
[1892]
Catalogue details

Licence: Public Domain Mark

Credit: Notice of new reptiles from the Laramie formation / by O.C. Marsh. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    5/6 (page 453)
    Claosmirus annectens, sp. nov. The reptiles of the Laramie allied to Hadrosaurus are numerous and highly specialized. One of the forms most distinct, but not abundant, is here described, and the type specimen is a nearly complete skull and skeleton. This will be fully described by the writer, but as the pelvis presents some points of interest it is represented in figure 4 below. The ilium exhibits no special characters of importance, and agrees in the main with the corresponding bone of the type of the genus. The ischium is especially elongated, and very straight. The pubis is represented by a very large, expanded prepubis,, and a mere remnant of the postpubis, as is well shown in the jBgare. 4 Figure 4.—Pelvis of Claosaurus annectens, Marsh. One sixteenth natural size. a, acetabulum; il, ilium ; is, ischium; ]), pubis; js', postpubis. This important specimen is from the Laramie of Wvomino- The fossils described in the present article were all collected by Mr. J. B. Hatcher, whose discoveries in the Rocky Mountam region are well known to paleontologists. New Haven, Conn., April 18, 1892.