Lower Devonian Bivalves from the Reefton Group, New Zealand |
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Page 70
... chondrophore , and consequently Lintz ( 1958 ) erected a further genus , Culunana , for Palaeozoic Polidevcia - like nuculanids that possessed this feature . However , the reputed absence of a chondrophore in Polidevcia was disputed by ...
... chondrophore , and consequently Lintz ( 1958 ) erected a further genus , Culunana , for Palaeozoic Polidevcia - like nuculanids that possessed this feature . However , the reputed absence of a chondrophore in Polidevcia was disputed by ...
Page 74
... chondrophore appears undeveloped , and teeth are continuous along the dorsal margin . In moderate - size individuals , 9 mm long ( Fig . 46A , F ) , the chondrophore is present but difficult to distinguish from adjacent teeth . In ...
... chondrophore appears undeveloped , and teeth are continuous along the dorsal margin . In moderate - size individuals , 9 mm long ( Fig . 46A , F ) , the chondrophore is present but difficult to distinguish from adjacent teeth . In ...
Page 86
... chondrophore , its long axis at right angles to the AP axis ( Figs 56C , 57 ) . Anterior dental section broad with up to 10 large chevronate teeth in a slightly arched line ; teeth becoming blade - like close to the chondrophore ( Fig ...
... chondrophore , its long axis at right angles to the AP axis ( Figs 56C , 57 ) . Anterior dental section broad with up to 10 large chevronate teeth in a slightly arched line ; teeth becoming blade - like close to the chondrophore ( Fig ...
Contents
Stratigraphy of the Reefton Group 24 | 2 |
Age of the Reefton Group | 9 |
Global affinities | 20 |
Copyright | |
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Common terms and phrases
accessory scar Adam Mudstone Alexander Mudstone anteriorly ap/ar auricle Baton River bivalves Bolitho Mudstone brachiopod Bradshaw & McCartan Carboniferous chondrophore complete LV Cornellites Ctenodontella dental section dentition Devonian Diagnosis disarticulated dorsal margin dorsomedian scar edentulous elongate Emsian epifaunal escutcheon external faint faunas fossil bands genus Glyptodesma grooves hinge view holotype Inangahua Outlier Inangahua River incomplete inequilateral inflated internal moulds internal plate Johnston lateral length/height ligament Limestone Lower Devonian lunule LV CM mackayi margin Fig Modiomorpha Murray Creek Formation Notonucula Nuculites Nuculoidea ornament Palaeozoic Paleodora pallial line paratype RV Phestia Pojeta posterior adductor scar posterior margin posterior retractor posterior shell posterior teeth posterior umbonal slope posterior wing posteriorly posteroumbonal ridge prosogyrate Prothyris ranfti Reefton Reefton Group reeftonensis retractor rounded sandstone Scale bars scatter diagram sediment shell margin siltstone specimens Taphonomy tooth Type species umbo umbonal cavity umbonal scars valves ventral ventral margin Waitahu Outlier Zealand