Elements of the comparative anatomy Elements of the comparative anatomy of vertebrates elementsofcompar00wied Year: 1886 FIG. 80.—PELVIS OF A YOUNG Alligator Indus. (A, ventral, and B, side view.) II, ilium ; Is, ischium ; P, pubis ; Sy, symphysis of ischium ; F, foramen cordiforme + obturatum ; B, fibrous band between the symphyses pubis and ischii; f, carti- laginous apophysis of the ventral acetabular process of the ischium, which is interposed between the process a of the ilium and the pubis ; b, foramen in the acetabulum, bounded posteriorly by the two processes, a and b, of the ilium an
Elements of the comparative anatomy Elements of the comparative anatomy of vertebrates elementsofcompar00wied Year: 1886 FIG. 80.—PELVIS OF A YOUNG Alligator Indus. (A, ventral, and B, side view.) II, ilium ; Is, ischium ; P, pubis ; Sy, symphysis of ischium ; F, foramen cordiforme + obturatum ; B, fibrous band between the symphyses pubis and ischii; f, carti- laginous apophysis of the ventral acetabular process of the ischium, which is interposed between the process a of the ilium and the pubis ; b, foramen in the acetabulum, bounded posteriorly by the two processes, a and b, of the ilium and ischium respectively, which here meet one another ; *, indication of a for- ward growth of the ilium, such as is met with in Dinosaurians and Birds ; G, acetabulum ; /, //, first and second sacral vertebrae ; M, fibrous membrane ex- tending between the anterior margin of the pubis and the last pair of 'abdominal ribs ' (SS). In Crocodiles we meet for the first time with a considerable extension of the ilium (Fig. 80, B, 77), so that now a longer posterior, and a shorter anterior process may be distinguished. In
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