Annals of the South African Museum, Volume 90The Museum, 1983 - Natural history |
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Page 263
... clavi with a broadly arched flattened venter . In the largest known Reesideoceras petrocoriensis ( De Grossouvre 1894 , pl . 1 ( fig . 2 ) ) the siphonal clavi are lost at the beginning of the body chamber and the ventral clavi are ...
... clavi with a broadly arched flattened venter . In the largest known Reesideoceras petrocoriensis ( De Grossouvre 1894 , pl . 1 ( fig . 2 ) ) the siphonal clavi are lost at the beginning of the body chamber and the ventral clavi are ...
Page 289
... clavi twice as numerous as the lateral tubercles . These in turn give rise to weaker , broad prorsiradiate ribs that form a chevron over the venter with a strong siphonal clavus at the apex of the ' V ' . Even at this diameter there is ...
... clavi twice as numerous as the lateral tubercles . These in turn give rise to weaker , broad prorsiradiate ribs that form a chevron over the venter with a strong siphonal clavus at the apex of the ' V ' . Even at this diameter there is ...
Page 299
... clavi . A shallow depression separates these from a corresponding number of siphonal clavi . This same style of ornament continues to 20 mm but the ribs become broader and lower . Beyond this the whorl section becomes very depressed ...
... clavi . A shallow depression separates these from a corresponding number of siphonal clavi . This same style of ornament continues to 20 mm but the ribs become broader and lower . Beyond this the whorl section becomes very depressed ...
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