Annals of the South African Museum, Volume 46The Museum, 1963 - Natural history |
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Page 430
... shell , and it has a very slight groove , visible on the 77 and 90 mm . apices , but dis- appearing on the basal part of the columella as seen in the fragments . The canal is not so markedly truncate as the figure of the Challenger shell ...
... shell , and it has a very slight groove , visible on the 77 and 90 mm . apices , but dis- appearing on the basal part of the columella as seen in the fragments . The canal is not so markedly truncate as the figure of the Challenger shell ...
Page 431
... shell 12-13 , regular , subequal ; on 5th whorl of larger shell 12 on upper half , 6 on lower half of whorl . Although the numbers of lirae on the two shells differ in number and strength , they cover the whorl completely between upper ...
... shell 12-13 , regular , subequal ; on 5th whorl of larger shell 12 on upper half , 6 on lower half of whorl . Although the numbers of lirae on the two shells differ in number and strength , they cover the whorl completely between upper ...
Page 445
... shell 7.5 , one 8 , one 11 , one 13 , and one 17 mm . long . Slightly curved . Ribs 9 on all specimens from apex onwards ; at 13 mm . one inter- mediary begins between each pair of main ribs , and on the last 4 mm . of the 17 mm . shell ...
... shell 7.5 , one 8 , one 11 , one 13 , and one 17 mm . long . Slightly curved . Ribs 9 on all specimens from apex onwards ; at 13 mm . one inter- mediary begins between each pair of main ribs , and on the last 4 mm . of the 17 mm . shell ...
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Common terms and phrases
abdomen alveolus apical arranged atrial Barnard basal base black type arabic Brnrd canine Cape Province Cape Town cingular cusp coast collection colony crown cynodonts dead dentary dentition described Description developed Diademodon diameter distal dorsal view Ecnomus Ericiolacerta erupted False Bay fathoms female genus gonad gonothecae Hartmeyer holotype hydrocladia hydrotheca incisors inner internode Jonkeria labial larvae legs length lingual lobes longitudinal male mandible margin material maxilla median Michaelsen Millard Name of author Natal nematothecae numerals without prefix pair Palaeontology palp paper papillae Papio Parapapio plate Polychaeta postcanine row postcanines posterior present protoconch replacing tooth SAMH sclerite segment setae side siphons slender slightly Sluiter South African Museum species spines stem surface synonymy Tapinocephalia teeth tergite thorax Thrinaxodon tooth replacement Transvaal transverse Trichoptera type arabic numerals type specimen ventral volume number wellsi whorls yellowish zooids Zool Zoology Zoology and Palaeontology Zoology excl