Annals of the South African Museum, Volume 90The Museum, 1983 - Natural history |
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Page 289
... tubercles . These give rise to a pair of straight or feebly concave ribs that link to strong oblique ventral clavi twice as numerous as the lateral tubercles . These in turn give rise to weaker , broad prorsiradiate ribs that form a ...
... tubercles . These give rise to a pair of straight or feebly concave ribs that link to strong oblique ventral clavi twice as numerous as the lateral tubercles . These in turn give rise to weaker , broad prorsiradiate ribs that form a ...
Page 313
... tubercles exposed within the umbilicus . The whorl section is depressed ( breadth to height ratio is 1,61 intercostally , 1,78 at the tubercles ) , with the greatest breadth low on the flank between the ribs and at the strong tubercles ...
... tubercles exposed within the umbilicus . The whorl section is depressed ( breadth to height ratio is 1,61 intercostally , 1,78 at the tubercles ) , with the greatest breadth low on the flank between the ribs and at the strong tubercles ...
Page 317
... tubercles , loss of ventral tuberculation and entire , rather than nodate , siphonal keel readily distinguish this species from Yabeiceras transiens sp . nov . , described above . Y. crassiornatum sp . nov . , described below , is more ...
... tubercles , loss of ventral tuberculation and entire , rather than nodate , siphonal keel readily distinguish this species from Yabeiceras transiens sp . nov . , described above . Y. crassiornatum sp . nov . , described below , is more ...
Contents
Systematic discussion | 41 |
Synopsis of the Afrotropical genera of Philosciidae | 47 |
INTRODUCTION | 51 |
Copyright | |
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Common terms and phrases
age classes age profiles age structure Agulhas Bank alluaudi Boule Antenna Antennular Antennule Apanthura apex attritional Barnard basal body chamber Budde-Lund capensis carpus catastrophic cephalon Chrysomya clavi coiling Collignon Coniacian croceipalpis crown height Damalacra Diagnosis diameter distal dorsal view Elandsfontein endite endopod endopodite Exiteloceras exopodite False Bay female Figure flagellum Forresteria Forresteria fossil genera genus Haliophasma Hoepen Holotype instar larva intertidal Isopoda Kensley Langebaan Langebaanweg large mammals lateral tubercles Lemoine & Thévenin Leptanthura lobe Malacanthura male Mandible margin Matsumoto Maxilliped mid-dorsal mortality profiles Nahia Natal Natalscia Neancyloceras non-ovig Nyanzachoerus ovig paratypes Pelorovis pereonites Pereopods 4-7 Philoscia Pleon Pleopod Pleopod 1 exopod population posterior propodal palm Raphicerus ribs rounded Saldanha Bay samples setae South African Museum specimens spines spiracles Taiti Telson third instar tooth Transkei triangular Type material Holotype type species ungulate UNWORN Uropodal Uropodal exopod ventral whorl Yabeiceras Zululand