. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 176 r DtNOSAttKIA. Family OMOSAUHID^E. Cranium (fig. 31) typically elongated, low, and narrow anteriorly, with large orbits, low infratemporal fossae, and moderate nares ; mandibular rami rather shallow, with narrow symphysis terminated by a predentary bone. Teeth scelidosauroid. Vertebras amphi- coelous; dorsals with slight lateral depressions on centrum, very narrow neural canal, and lofty arch without deep pits in front of postzygapophyses
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 176 r DtNOSAttKIA. Family OMOSAUHID^E. Cranium (fig. 31) typically elongated, low, and narrow anteriorly, with large orbits, low infratemporal fossae, and moderate nares ; mandibular rami rather shallow, with narrow symphysis terminated by a predentary bone. Teeth scelidosauroid. Vertebras amphi- coelous; dorsals with slight lateral depressions on centrum, very narrow neural canal, and lofty arch without deep pits in front of postzygapophyses; each sacral bearing entirely or partly its own arch ; anterior caudals with transverse diameter of centrum longer than vertical; chevrons open; rib-facets of middle dorsal vertebrae on arch. Limb-bones solid; scapula (fig. 32) with large glenoidal expansion, forming a right angle with anterior border of shaft; coracoid without descending process: humerus short and thick, with expanded extremities. Ilium (fig. 32) with very long and stout Fig. s, Marsh.—Left lateral view of cranium; from the Upper Jurassic of North America. \. a, nares ; b, orbit; c, infratemporal fossa; pm, premaxilla; m, maxilla ; n, nasal; pf, prefrontal; so, supraorbital]; fp, postfrontal; po, postorbital; I, lachrymal; j, jugal; g, quadrate; sq, squamosal; oc, occipital condyle; ar, articular; sa, surangular; an, angular; s, splenial; d, dentary; pd, predentary. (From the ' Amer. Journ.') preacetabular, and short postacetabular process; pubis and ischium short, without distal expansion ; femur with or without distinct inner trochanter, much longer than tibia, which is not greatly longer than 1 This bone, forming the upper border of the orbit and connecting the pre- and post-frontals, appears to be an element usually not represented as a distinct Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearan
Size: 2320px × 1077px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlydekkerrichard184919, bookcentury1800, bookdecade1880
