. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. â " B 1 mm Figure 43. The antebrachial bones of Eocaecilia micropodia. (A) A presumptively associated left radius and ulna (MCZ 9242). (B) Proximal left ulna (MCZ 9238) in anterior view (stereophotographs). Femur (MNA V8055, V8062 . A com- plete left femur (Fig. 44 is mm in length and has a midshaft width of mm. The bulbous, approximately oval femoral head is oriented primarilv dorso- ventralrv but is slightlv skewed, such that the dorsal half is more anteriorlv situated than the ventral h
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. â " B 1 mm Figure 43. The antebrachial bones of Eocaecilia micropodia. (A) A presumptively associated left radius and ulna (MCZ 9242). (B) Proximal left ulna (MCZ 9238) in anterior view (stereophotographs). Femur (MNA V8055, V8062 . A com- plete left femur (Fig. 44 is mm in length and has a midshaft width of mm. The bulbous, approximately oval femoral head is oriented primarilv dorso- ventralrv but is slightlv skewed, such that the dorsal half is more anteriorlv situated than the ventral half. On the medial and lateral sides of the head are shallow de- pressions, comparable to the foveae of some salamanders that represent the at- tachments of acetabular Ligaments from the pubis and ilium (Francis. 1934. pi. V. fig. 32). A prominent, triangular trochanter is situated on the medioventral side of the proximal shaft. The expanded distal end. which is somewhat damaged estimated width 1 mm), bears two condvles separat- ed bv an intereondvlar groove. The lateral condyle is wider and more protuberant and possesses a larger radius of curvature than the medial eondvle Fig. 44C . The lateral epieondvlar region is distinctlv con- vex and faeetlike. features that probably represent the articular surface for the fib- ula Fig. 44B . In overall proportions and, specificallv. in the configuration of the femoral head, the foveae. and the trochan- ter, the femur of Eocaecilia micropodia is similar to that in certain modern salaman- ders for a comparative illustration, see Jenkins and Walsh. 1993. fig. lh. i). The femoral head distinctlv differs from those of microsaurs and other Paleozoic amphib- ians, which are anteroposteriorlv elongate. Tibia MCZ 9237; MX A V8Q55, V8062 . A complete tibia associated with MNA YS062 (Fig. 36) is mm in length with a midshaft diameter of mm: the tibia associated with MNA V8055 (Fig. 45B) is mm in length. The transverselv ex- panded pr
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