New genera and species from the Belly River Series (mid-Cretaceous) Author Lambe L. M. text Geological Survey of Canada Contributions to Canadian Palaeontology 1902 3 25 81 journal article 10.5281/zenodo.3233762 1fa3e048-6e17-4084-926c-3c77dabfffc9 3233762 Baena hatcheri , Hay. Baena hatcheri Hay. 1901. Annals of the Carnegie Museum, pp. 325-.326) plate XV . " Description of a new species of Baena (B. hatcheri) from the Laramie beds of Wyoming." This species is represented from the Cretaceous of Red Deer river by a specimen, fig. 8 , in which the whole of the plastron is preserved with the anterior half of the carapace. The sutures between the bones are well defined and the sulci are distinct. The carapace has suffered slightly from distortion, but the plastron is admirably preserved leaving little doubt as to the specific identity of the Red Deer river turtle with the Wyoming type. Fig. 8. The plastron of Baena hatcheri ; from Red Deer river. One-half natural size. /&',Intergular shield; G, Gular do.; HUM, Humeral do.; PEC, Pectoral do.; AB, Abdominal do.; FEM, Femoral do.; AN, Anal do.: ep, Epiplastral bone; entp, Entoplastral do.; hyp, Hyoplastral do.; msp, Mesoplastral do.; hpp, Hypoplastral do.; xp, Xiphiplastral do.; * centre of front margin of carapace . Additional.specimeus consist of the anterior half of a plastron, parts of two other plastra, and a poorly preserved carapace of small size in which, however, the convexity of this half of the shell is well shown. The variation in the direction of the gular and intergular sulci, in different individuals, to which Leidy drew attention in his description of Ba'ena arenosa,* from a higher horizon, is noticeable in the two Red Deer river specimens, neither of which agree exactly with the type. Fig. 9. Front lobe of the plastron of another specimen from Red Deer river. One- half the natural size . Belly Eiver series, Eed Deer river, 3901.