Lower Devonian Bivalves from the Reefton Group, New Zealand |
From inside the book
Results 1-3 of 42
Page 62
... retractor ( Fig . 37A , B ) . Further comparison with Nuculites frigidus ( Bradshaw in Bradshaw & McCartan , 1991 : figs 12 , 13 ) suggests that the highly elongated posterior ... posterior visceral floor ( pvf ) , although Bailey ( 1983 : ...
... retractor ( Fig . 37A , B ) . Further comparison with Nuculites frigidus ( Bradshaw in Bradshaw & McCartan , 1991 : figs 12 , 13 ) suggests that the highly elongated posterior ... posterior visceral floor ( pvf ) , although Bailey ( 1983 : ...
Page 95
... retractor scar extends along the posterior umbonal slope from dorsal edge of posterior adductor scar ( Fig . 63C ) . In RV , retractor lobe lies at right angles to the hinge line , terminating close to the posterior lateral tooth ( Fig ...
... retractor scar extends along the posterior umbonal slope from dorsal edge of posterior adductor scar ( Fig . 63C ) . In RV , retractor lobe lies at right angles to the hinge line , terminating close to the posterior lateral tooth ( Fig ...
Page 101
... posterior adductor scar rounded , larger than anterior scar , impressed , lying close to posterior dentition , with a broad , confluent , strongly impressed , lobate posterior retractor extending dorsally along the posterior umbonal ...
... posterior adductor scar rounded , larger than anterior scar , impressed , lying close to posterior dentition , with a broad , confluent , strongly impressed , lobate posterior retractor extending dorsally along the posterior umbonal ...
Contents
Stratigraphy of the Reefton Group 24 | 2 |
Age of the Reefton Group | 9 |
Global affinities | 20 |
Copyright | |
1 other sections not shown
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