Annals of the South African Museum, Volume 45The Museum, 1959 - Natural history |
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Page 406
... root . B. ROOT REDUCTION Root reduction has been observed in three cases only , all P2 . In these , the tooth has only one single root , round in section and rather conical in appearance , instead of the two normal ( anterior and posterior ) ...
... root . B. ROOT REDUCTION Root reduction has been observed in three cases only , all P2 . In these , the tooth has only one single root , round in section and rather conical in appearance , instead of the two normal ( anterior and posterior ) ...
Page 407
... root , corresponding to the intermediate pillar . It is rather buccally located , circular in shape , and is shorter than the two main roots . The development of this central root is quite variable . The normal appearance ( so - called ...
... root , corresponding to the intermediate pillar . It is rather buccally located , circular in shape , and is shorter than the two main roots . The development of this central root is quite variable . The normal appearance ( so - called ...
Page 481
... root on the lingual side , with the anterior pillar reflecting the largest bulge on the root . The two buccal roots are separated , but the posterior one is broken off near the base and the anterior root is broken at the crown - root ...
... root on the lingual side , with the anterior pillar reflecting the largest bulge on the root . The two buccal roots are separated , but the posterior one is broken off near the base and the anterior root is broken at the crown - root ...
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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