Annals of the South African Museum, Volume 45The Museum, 1959 - Natural history |
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Page 449
... anteriorly and commence at the base of the anterior border and pass in an inverted triangular fashion , the anterior grooves being vertical and the posterior oblique . The anterior groove branches about half - way up . The posterior ...
... anteriorly and commence at the base of the anterior border and pass in an inverted triangular fashion , the anterior grooves being vertical and the posterior oblique . The anterior groove branches about half - way up . The posterior ...
Page 450
... anterior pillar there is a marked rounded cingulum , the lower border ( the one towards the occlusal surface ) of which increases in thickness on the anterior surface producing an unusually long , rolled and ridged protostyle . The ...
... anterior pillar there is a marked rounded cingulum , the lower border ( the one towards the occlusal surface ) of which increases in thickness on the anterior surface producing an unusually long , rolled and ridged protostyle . The ...
Page 477
... anteriorly . The posterior border is rounded ; the anterior border at , and above , the flange narrows ( and it is more angular than at the base ) while nearer the tip , above the second knob , the anterior border becomes rounder ...
... anteriorly . The posterior border is rounded ; the anterior border at , and above , the flange narrows ( and it is more angular than at the base ) while nearer the tip , above the second knob , the anterior border becomes rounder ...
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Common terms and phrases
1st whorl 2nd whorl 3rd whorl 4th whorl additional lirae antennae anteriorly aperture apex axial ribs Bartsch body whorl brown Buccal surface callus camelopardalis Cape Cape Natal capensis central pit central plate cingulum cirri cirrus columella Conch cusps denticles diam distal dorsal cirri Durban elytra enamel False Bay fathoms Fauvel Giraffa groove Holotype Hopefield horn-core hypocone juveniles knobs last whorl later whorls lateral plate length lingual surface M₁ mandible Martens median mesostyle metres molar Museum Natal Occlusal surface Olduvai Operculum outer lip P.F. coll pale parapodium parietal callus periostracum plicate Port Alfred posterior pillar Postnatal whorls Proc prostomium protoconch Protoconch 2 whorls radula Records root rows rugose segments setae setiger setigerous lobe shell Sivatherium slightly Smith smooth South African Sowerby species specimens spiral lirae spiral striae spire suture talonid teeth Thiele Tiefsee Exp Tomlin tooth Turton upper Zool Zoology