Bulletins of American paleontology . ILICATULA MARfilNATA. — (Fig. 103.) Shell strong and thick, but ratliersnuill; valves sub-equal, ovate, wedge-form, with three strong radiating plicae. FAMILY ISIYTILTDA];.—^MVTILUS INCRASSATUS. (Fig. 2i3A.)Shell nacreous, tJiick, somewhat intla-ted, marked \vitli concentric lines ofgr\vth ; auteridi margin arched ac-cumiuale; ]H;):^terior Ioaiided, ?ome-wind dilated; uudujiies acute. Jtis lisiially much injured l)y exloiialion and rarely peifect. CUENELLA.—(Fig. 20;Vr>.) Shell small, slu_»rt,^ -• thin. smo()tli in ihcmiddle; hinge, nuir-gin crenulated b
Bulletins of American paleontology . ILICATULA MARfilNATA. — (Fig. 103.) Shell strong and thick, but ratliersnuill; valves sub-equal, ovate, wedge-form, with three strong radiating plicae. FAMILY ISIYTILTDA];.—^MVTILUS INCRASSATUS. (Fig. 2i3A.)Shell nacreous, tJiick, somewhat intla-ted, marked \vitli concentric lines ofgr\vth ; auteridi margin arched ac-cumiuale; ]H;):^terior Ioaiided, ?ome-wind dilated; uudujiies acute. Jtis lisiially much injured l)y exloiialion and rarely peifect. CUENELLA.—(Fig. 20;Vr>.) Shell small, slu_»rt,^ -• thin. smo()tli in ihcmiddle; hinge, nuir-gin crenulated behindthe ligament. It ap-pears to be rare,thoughit may be owing to its frailness. Mi-ocene. North Carolina Geol. Sur.: Emmons 193 284 NORTH-CAEOLINA GEOLOGICAL 8TIRVEY. AKCADAE. The valves in tlie Arcadae are equal, regular, and usuallyoblique; the teeth are arranged in long rows, resembling acomb; at the extremes they are longer and frequently curvedor corrugated. AECA LIENOSA.—SAT. (Fig. 204r.) Shell large, inf
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Keywords: ., bookcentury1800, bookdecade1890, bookidbulletinsofa, bookyear1895
