. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. CEOCODILIA. 43 pubis1 directed forwards, with cartilaginous symphysis, and fre- quently excluded from acetabulum ; ischium short and thick, without obturator process ; femur with curved shaft, head oblique to condyles, and not differentiated from tuberosities, and no inner trochanter; tibia without cnemial crest; astragalus not flattened, and distinct from tibia. A ventral dermal armour may be present; and the mandible nearly always has a lat
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. CEOCODILIA. 43 pubis1 directed forwards, with cartilaginous symphysis, and fre- quently excluded from acetabulum ; ischium short and thick, without obturator process ; femur with curved shaft, head oblique to condyles, and not differentiated from tuberosities, and no inner trochanter; tibia without cnemial crest; astragalus not flattened, and distinct from tibia. A ventral dermal armour may be present; and the mandible nearly always has a lateral vacuity. Habits quadrupedal and subaquatic; feet Crocodilus vulgaris.—Left side of pelvis. }. II, ilium; pra,psa, pre- and post- acetabular processes of ditto; Is, ischium; P., pubis; v, acetabulum. (From the 'Quart. Journ. Geol. Soc.') Suborder EUSUCHIA. Premaxillae, maxillae, aud palatines with palatal plates uniting in the median line to separate the narial and oral passages; no columella ; anterior nares terminal and usually undivided ; vomers generally invisible on palate; no distinct postfrontal2; middle eustachian canal bony; and premaxilla with not more than 4 or 5 teeth. No clavicle; coracoid elongated, with small fontanelle; humerus without ectepicondylar groove. Pubis3 excluded from acetabulum (fig. 7) ; five digits in manus and four in pes, of which three have claws. Yertebrse pro- or amphicoelous. Dorsal scutes 1 Seeley (Proc. R. Soc. vol. xliii. p. 235 [1887]) regards the bone usually termed pubis in the Eusuchia as a prepubis. 2 See Baur, Zool. Anzeiger, No. 240 (1886).—The bone commonly termed postfrontal is really the postorbital. 3 See note Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). Dept. of Geology; Lydekker, Richard, 1849-1
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