Annals of the South African MuseumSouth African Museum, 1990 - Natual history |
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Page 6
... present along the reflexed tergal segment . Articular ridge high , about four - fifths of tergal margin in length and reflexed over relatively narrow articular furrow ; articular ridge thins basally , ending in a closely rounded - off ...
... present along the reflexed tergal segment . Articular ridge high , about four - fifths of tergal margin in length and reflexed over relatively narrow articular furrow ; articular ridge thins basally , ending in a closely rounded - off ...
Page 7
... present austral endemism being due to Northern Hemi- sphere extinction and Neogene dispersal via the West Wind Drift . Notomega- balanus is considered more generalized than Austromegabalanus s.s. , whilst Megabalanus s.s. is the most ...
... present austral endemism being due to Northern Hemi- sphere extinction and Neogene dispersal via the West Wind Drift . Notomega- balanus is considered more generalized than Austromegabalanus s.s. , whilst Megabalanus s.s. is the most ...
Page 12
... present species bears out that supposition that , with inclusion of the North American fossil species , may now be amplified to include both hemispheres during the Neogene . Another species of Austromegabalanus is represented in the ...
... present species bears out that supposition that , with inclusion of the North American fossil species , may now be amplified to include both hemispheres during the Neogene . Another species of Austromegabalanus is represented in the ...
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Common terms and phrases
1983 Austromegabalanus Notomegabalanus 50-m Package abbreviated apex articular furrow articular ridge austral megabalanine Austromegabalanus Austromegabalanus Austromegabalanus Notomegabalanus Austromegabalanus s.s. BALANIDAE Balanus barnacle coquina basal lower shoreface basal margin convex basi-scutal angle beaked campbelli Filhol Cape Town carinal closed spur furrow cluster concave denticles deposits depressor crests Disarticulated exterior radial exterior scutal portion extinct Fosterella Fosterella chathamensis Buckeridge Gastropoda Holotype Hondeklip Zone 12A infill kensleyi sp lateral depressor pit Leda Megabalanus s.s. Miocene Namaqualand Notomega NZ S NZ occludent margin Oligocene opercula paratypes parentheses parietal pores Pleistocene Pliocene porous radii punctuation radial sculpture references Roman numerals scientific name scutal margin scutum septa shallow spur furrow shallow subtidal shells without opercula SOUTH AFRICA South African Museum species of Notomegabalanus specimens squillae Daniel subgenus Subgenus Notomegabalanus subheadings are shouldered sutural edges Synonymy Synonymy arrangement taxa tergal margin tergum transverse septa upper shoreface width from basi-scutal Zullo & Guruswami-Naidu