. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 344 Bulletin Museum of Comparative Zoology, Vol. 158, No. 6. Figure 38. Forelimb elements of Eocaecilia micropodia (MCZ 9169), an enlargement of Figure 35A to show details of the scapulocoracoid, glenoid, humerus, and partial ulna. The upper and lower arrows indicating the glenoid (gl) point, respectively, to the scapular and coracoidal components of the glenoid facet (stereophotographs). dorsolateral to the ventromedial surfaces of the proximal end in a spiral pattern common among Paleozoic amphibians (Fig.
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 344 Bulletin Museum of Comparative Zoology, Vol. 158, No. 6. Figure 38. Forelimb elements of Eocaecilia micropodia (MCZ 9169), an enlargement of Figure 35A to show details of the scapulocoracoid, glenoid, humerus, and partial ulna. The upper and lower arrows indicating the glenoid (gl) point, respectively, to the scapular and coracoidal components of the glenoid facet (stereophotographs). dorsolateral to the ventromedial surfaces of the proximal end in a spiral pattern common among Paleozoic amphibians (Fig. 42A-D; also present in MCZ 9166). The deltopectoral crest in an apparently undistorted humerus is reflected ventrally (Fig. 38) and is continuous with a low ridge that extends proximally. A small tu- berosity on the dorsomedial side of the proximal diaphysis (Fig. 42C, D) is com- parable in position to that in some micro- saurs (, Cardiocephalus, Pantijlus, Ric- nodon, Carroll and Gaskill, 1978, figs. 122A, B, 123D). In Recent Salamandra, a similar tuberosity serves as the site of in- sertion of subscapular musculature (Fran- cis, 1934). Complete humeri (Figs. 38, 41) exhibit a simple shaft that is approximately circular in cross section. The distal end of the humerus bears a bulbous, hemispher- oidal capitulum for the proximal radius and a broad but distinct trochlea for the proximal ulna (Fig. 42E; see also MCZ 9169, 9172). The ectepicondyle is repre- sented only as a low ridge. The entepicon- dyle, in contrast, is a relatively robust pro- tuberance that is prolonged distally; there is no entepicondylar foramen. Along the margin of the proximal border of the ca- pitulum, the diaphysis is incised with a deep, hemicircular sulcus that presumably accommodated the radius in its most flexed position. MNA V8056 includes an associated distal humerus and a proximal radius and ulna that lie in nearly articulat- ed position. Radius (MCZ 9242, 9169; MNA V8056). A radius presumptivel
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