Annals of the South African MuseumSouth African Museum, 1990 - Natual history |
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Page 3
... scutal margin 2,6 mm . Largest shell . SAM - PQ - AV984a , height 6,3 mm , diameter 14,7 mm . Largest scutum . SAM - PQ - HB180 , occludent margin 6,2 mm . Description Shell relatively small ( ~ 1 cm basal diameter ) . Specimens from ...
... scutal margin 2,6 mm . Largest shell . SAM - PQ - AV984a , height 6,3 mm , diameter 14,7 mm . Largest scutum . SAM - PQ - HB180 , occludent margin 6,2 mm . Description Shell relatively small ( ~ 1 cm basal diameter ) . Specimens from ...
Page 6
... scutal margin straight ; exterior with low growth ridges , more pronounced on scutal portion ; no radial sculpture . Spur furrow broad , open and very shallow to flush ; margins slightly incised . Exterior carinal portion gently convex ...
... scutal margin straight ; exterior with low growth ridges , more pronounced on scutal portion ; no radial sculpture . Spur furrow broad , open and very shallow to flush ; margins slightly incised . Exterior carinal portion gently convex ...
Page 9
... scutal margin , presence of distinct depressor crests , and radially striate exterior scutal portion . The opercula of A. ( ? N . ) obliquus ( Ross , 1964 ) ( Pliocene , Western North Atlantic ) have not been recovered but that species ...
... scutal margin , presence of distinct depressor crests , and radially striate exterior scutal portion . The opercula of A. ( ? N . ) obliquus ( Ross , 1964 ) ( Pliocene , Western North Atlantic ) have not been recovered but that species ...
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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