. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 1 mm Figure 41. A complete left humerus of Eocaecilia micropodia (MCZ 9163) in ventral view. The specimen has been slightly crushed, with the deltopectoral crest deflected from the normal ventral orientation (stereophotographs). ulna (MCZ 9242, Fig. 43A) is mm in overall length. The surface of the proximal facet is set at an angle of about 20° to a plane normal to the shaft. The length of the radius measured from the most distal margin of the articular facet is mm. Diaphyseal width narrows at midshaf
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 1 mm Figure 41. A complete left humerus of Eocaecilia micropodia (MCZ 9163) in ventral view. The specimen has been slightly crushed, with the deltopectoral crest deflected from the normal ventral orientation (stereophotographs). ulna (MCZ 9242, Fig. 43A) is mm in overall length. The surface of the proximal facet is set at an angle of about 20° to a plane normal to the shaft. The length of the radius measured from the most distal margin of the articular facet is mm. Diaphyseal width narrows at midshaft to mm, with the proximal end of the ra- dius being more expanded than the distal end. The smaller distal articular facet is oval in outline and is set almost perpen- dicular to the shaft. Ulna (MCZ 9163, 9167, 9169, 9238, 9242; MNA V8054, V8065). Complete ul- nae vary in length from mm (MCZ 9163) to mm (MNA V8065, MCZ 9242). The proximal articular facet is asymmetrically biplanar, with the larger of the two demifacets being on the radial side (Fig. 43B). The olecranon process is short but distinct. The ulna is relatively broad, both mediolaterally and anteroposteriorly at its proximal end, and tapers to its nar- rowest point at midshaft. The distal end is only slightly expanded and bears a circular articular facet set perpendicularly to the shaft. Manus. Although various mesopodial, metapodial, and phalangeal elements are associated with several disarticulated spec- imens of Eocaecilia micropodia, none can be confidently attributed to the manus. Pelvis. No pelvic elements can be posi- tively identified. MCZ 9171 is a disaggre- gated assemblage that includes jaws, an at- las, a scapulocoracoid, and several caudal vertebrae (Fig. 40B). Adjacent to the cau- dal vertebrae is a bladelike bone that is not comparable to any other known skeletal el- ement in Eocaecilia. The bone (?pel, Fig. 40B) widens at one end, is narrower in the middle, and bears a concave articular
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
