Papers on Fossil VertebratesColin Patterson, Peter Humphry Greenwood |
Contents
FOREWORD | 3 |
L The Lower Devonian Knoydart faunas | 31 |
LEHMAN J P Quelques remarques concernant Drepanaspis gemuendenensis | 39 |
Copyright | |
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Common terms and phrases
adductor anterior appear arches beds body branchial canal bones cartilage caudal clearly close comparable completely condition corresponding covered dermal bones described Devonian dipnoans dorsal early elements elongated evidence field fishes Formation forms fossil fragments genus Geol groove Gross groups head Heintz heterostracans holotype Jarvik known lamina lateral length lower lower jaw mandibular margin material meckelian median Middle Museum Natural Neoceratodus neural noted Old Red opening oral orbital origin Ørvig ossification pattern pectoral plate pointed portion position posterior posteriorly preoperculum present preserved probably Pteraspis referred region represent Rhamphodopsis ridges rostrum Sandstone scales seems seen sensory canal separate shield shown side similar skull species specimen spine stage Stensiö structure suggested surface symphysial teeth teleosts tesserae Text-fig tissue tooth tubercles Upper ventral vertebrates vertical Watson White Zool