. Bulletin of the Natural Histort Museum. Geology series. UPPER ORDOVICIAN BRACHIOPODS FROM KAZAKHSTAN 33. 9 () 5 10 mm _i i i i i i Fig. 11 Transverse serial sections of Teratelasmella chugaevae sp. nov. from Sample 100. Distance in mm is measured from the posterior tip of ventral beak. Dorsal valve uppermost. Also lateral view to show section positions and schematic reconstruction. ribs and ornament becomes unequally parvicostellate, with up to 4 accentuated ribs and 9-15 parvicostellae per 3 mm along the anterior margin. Ventral interior with delicate teeth and long, divergent dental pla
. Bulletin of the Natural Histort Museum. Geology series. UPPER ORDOVICIAN BRACHIOPODS FROM KAZAKHSTAN 33. 9 () 5 10 mm _i i i i i i Fig. 11 Transverse serial sections of Teratelasmella chugaevae sp. nov. from Sample 100. Distance in mm is measured from the posterior tip of ventral beak. Dorsal valve uppermost. Also lateral view to show section positions and schematic reconstruction. ribs and ornament becomes unequally parvicostellate, with up to 4 accentuated ribs and 9-15 parvicostellae per 3 mm along the anterior margin. Ventral interior with delicate teeth and long, divergent dental plates. Ventral muscle field subtriangular, open anteriorly. Dorsal interior with bilobed cardinal process. Other characters of dorsal interior unknown. Discussion. Within the Furcitellidae as revised by Cocks & Rong (2000) these shells are comparable with Quondongia (Percival 1991:151) and Molongcola (Percival 1991:153) from the Caradoc of Australia in their planoconvex lateral shell profile and in the absence of geniculation, but they differ from Molongcola in possessing parvicostellate ornament. The absence of information on the dorsal interior makes precise generic attribution impossible. Family GLYPTOMENIDAE Cooper, 1956 Genus GLYPTOMENA Cooper, 1956 TYPE SPECIES. Glyptomena sculpturata Cooper, 1956. from the Chatham Hill Formation (Llandeilo), Virginia, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Museum (London). Andover : Intercept
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