. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Anatomy of Eocaecilia micropodia 'Jenkins, Walsh, and Carroll 341. 1 mm Figure 37. (A) Dorsal vertebrae, (B) caudal vertebrae of Eocaecilia micropodia (MNA V8055; stereophotographs). to have centrum lengths comparable to those of the sacrals ( mm) but have zyg- apophyses that project dorsally, in contrast to more horizontally inclined processes of dorsal and sacral vertebrae. Distal caudal vertebrae are represented by a single, dis- articulated vertebra and an attenuating se- ries of approximately eight ve
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Anatomy of Eocaecilia micropodia 'Jenkins, Walsh, and Carroll 341. 1 mm Figure 37. (A) Dorsal vertebrae, (B) caudal vertebrae of Eocaecilia micropodia (MNA V8055; stereophotographs). to have centrum lengths comparable to those of the sacrals ( mm) but have zyg- apophyses that project dorsally, in contrast to more horizontally inclined processes of dorsal and sacral vertebrae. Distal caudal vertebrae are represented by a single, dis- articulated vertebra and an attenuating se- ries of approximately eight vertebrae. The single vertebra has a centrum length of mm and bears a prominent, posteriorly re- curved, tapering spinous process. The ter- minal series of vertebrae is very damaged but exhibits a diminishing length gradient of the centra from about to mm. MNA V8055 preserves some 30 verte- brae, a number of which occur in articu- lated series. One series of 12 vertebrae ap- pears to be continuous, although the con- tinuity is disrupted between the sixth and seventh by a disarticulation to a right-angle bend (Fig. 37A). A few slender rib frag- ments are associated, and the lengths of the centra diminish from about 2 mm an- teriorly to mm posteriorly; this series appears to represent the dorsal or very possibly posterior dorsal region. Five iso- lated vertebrae, including two that are ar- ticulated, also appear to be dorsals; other isolated vertebrae are too imperfectly pre- served to be useful. Caudal vertebrae (Fig. 37B) are represented in a more or less ar- ticulated series of 10, with the lengths of the centra diminishing from mm on the most anterior to approximately 1 mm on the penultimate. The zygapophyses on the anterior three are small and set close to the midline; distal to the fifth vertebra, zygapophysial articulations are reduced to a simple overlap of a lamina with that of the vertebra behind. Several well-devel- oped haemal arches are associated
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