Annals of the South African Museum, Volume 101The Museum, 1992 - Natural history |
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Page 114
... ventral tubercles . This range of variation is also seen on the shafts of our specimens . In the compressed variety , ribbing is dense and prorsiradiate , and only ventral tubercles , linking two to three ribs , occur . On the more ...
... ventral tubercles . This range of variation is also seen on the shafts of our specimens . In the compressed variety , ribbing is dense and prorsiradiate , and only ventral tubercles , linking two to three ribs , occur . On the more ...
Page 166
... ventral ambulacrum , where they are difficult to distinguish from encrustations ; discs small , brownish ; end plates and supporting rods absent . Calcareous ring ( Fig . 2B ) delicate , radial plates dissimilar , usually squarish ...
... ventral ambulacrum , where they are difficult to distinguish from encrustations ; discs small , brownish ; end plates and supporting rods absent . Calcareous ring ( Fig . 2B ) delicate , radial plates dissimilar , usually squarish ...
Page 179
... ventral spicules 0,22-0,58 mm . Spatulate rods , crosses , ellipsoidal and amorphous deposits absent . Pedicels with ... ventral spicules are somewhat like those of O. aspersignis ; hence O. natalasper appears intermediate between the ...
... ventral spicules 0,22-0,58 mm . Spatulate rods , crosses , ellipsoidal and amorphous deposits absent . Pedicels with ... ventral spicules are somewhat like those of O. aspersignis ; hence O. natalasper appears intermediate between the ...
Contents
SHONE R | 8 |
Distribution | 39 |
STEWART B A GRIFFITHS C L | 138 |
Copyright | |
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Common terms and phrases
abbreviations Acabaria Acrioceras Aguirre Urreta Algoa Bay ammonites Ammonoidea ANGELES Annals antenna Anthocodiae Augen australis author's name Axis Barremian Bayer bicuspidata BMNH body wall branches CALIFORN calyces Cape Province Cape Town capensis Coenenchymal sclerites coiling Collignon Colony colour Colotes cortex coxa Crioceratites Cryptocrioceras described dichotomous dredge elongate Emericiceras Eunicella Exp2 Family Flügeldecken G. C. Williams gelb genera genus gilchristi Halsschild Hauterivian Hemihoplites Hickson holotype Immel inner Kopf Kükenthal length Leptogorgia Lovenula male margin material Maxillarpalpen Maxilliped Natal Orphnurgus outer Paracrioceras Paradiaptomus Paramelita paratypes pedicels peduncle Pereopod plates Polyps posteriorly R.V. Meiring Naude ribs Riccardi rods Sardinia Bay Sarkar scales schwarz sclerites segments setae setose Simpsonella South African Museum southern Africa specimens spicules spindles spines Stiasny SUID-AFRIKAANSE MUSEUM synonym Synonymy tabarelli Théel Thomel Thomson trace fossils Transkei trituberculate tuberculate Type species Uropod ventral ventrolateral Verrill whorls Wright & Studer yrigoyeni Leanza zulu Zululand