. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London ... Reptiles, Fossil. 112 MA BINE EEPTILES OF THE OXFOED CLAY. it again slightly enlarges and bears an elongated oval facet, which was probably cartilage-covered in life. This facet seems to have united with the ilium, while posteriorly there was a slight union with the anterior process of the ischium. Probably much cartilage persisted at this point, so that the bones were not in actual contact. In any case there is no evidence that the pubis articu
. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London ... Reptiles, Fossil. 112 MA BINE EEPTILES OF THE OXFOED CLAY. it again slightly enlarges and bears an elongated oval facet, which was probably cartilage-covered in life. This facet seems to have united with the ilium, while posteriorly there was a slight union with the anterior process of the ischium. Probably much cartilage persisted at this point, so that the bones were not in actual contact. In any case there is no evidence that the pubis articulated only with the anterior process of the ischium. The femur (text-fig. 45) is by far the largest of the limb-bones ; it is relatively slender and greatly elongated, forming a very open S-shaped curve. The head (Ji.) is closely similar to that of the femur in recent Crocodiles, though, perhaps, a little more massive. It is strongly convex, the convex surface being truncated on its outer side () by the flat outer face of the bone ;* on the inner (acetabular) side there is a strong rounded prominence (). The flattened outer face of the upper end of the bone is Text-fig. Eight femur of Steneosavrus leedsi: A, inner (preaxial) view ; B, distal end ; C, proximal end. (E. 3806, | nat. size.) 7t., head ; , inner condyle ; , intercondylar groove; , inner side of head ; ox., outer condyle ; , outer side of head ; t., trochanterial surface. marked by a series of longitudinal rugosities ; the inner face beneath the head is also roughened and is concave. A rugose surface on the inner face of the shaft is all that represents the lesser trochanter (t,), which, in modern Crocodiles, forms a strong prominence. Beyond this, for a short distance, the shaft becomes more slender and is oval in section; beyond this, again, it is strongly compressed, its upper edge forming a sharp keel, while below it remains rounded. The distal end in nearly all specimens is mu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectreptile, bookyear1910
