. East coast marine shells : descriptions of shore mollusks together with many living below tide mark, from Maine to Texas inclusive, especially Florida, with more than one thousand drawings and photographs . Fig. 12 Callioatoma, showing carina or keeled. When very sharp the edge is known as the CARINA, Fig. 12 in the accompanying fig- ure of Calliostoma har- risi, a fossil species from the southern states. Several of the Astraeas are strongly carinated species. Suture is that portion where the whorls Join; see Fig. lib. It is largely influenced by the convex or placate charac- ters of the who
. East coast marine shells : descriptions of shore mollusks together with many living below tide mark, from Maine to Texas inclusive, especially Florida, with more than one thousand drawings and photographs . Fig. 12 Callioatoma, showing carina or keeled. When very sharp the edge is known as the CARINA, Fig. 12 in the accompanying fig- ure of Calliostoma har- risi, a fossil species from the southern states. Several of the Astraeas are strongly carinated species. Suture is that portion where the whorls Join; see Fig. lib. It is largely influenced by the convex or placate charac- ters of the whorls. It may be CANALICULATE or CHANNELLED when a broad and deep chan- nel follows close to the junction of the whorls. This is well illustrated in Busycon canaliculatum, It is CRENDLATED when the suture is inter- rupted by indentations which break the con- tinuity. An example of this is Pyramidel- la crenulata, from Florida.
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
