Memoirs of the Manchester Literary and Philosophical Society, Volume 72Manchester Literary and Philosophical Society., 1928 |
From inside the book
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Page 54
... interior of the dorsal valve the crural plates are solid , sub- trigonal in plan and usually well - developed . The cardinal process is fissured , and the muscle - scars well - defined and with strong transverse and peripheral ridges ...
... interior of the dorsal valve the crural plates are solid , sub- trigonal in plan and usually well - developed . The cardinal process is fissured , and the muscle - scars well - defined and with strong transverse and peripheral ridges ...
Page 55
... interior of the ventral valve distinguished from Resserella only by the absence of conspicuous vascular sinuses . The genus embraces a considerable range of fine and fairly coarse - ribbed forms . Divergent forms are character- ized by ...
... interior of the ventral valve distinguished from Resserella only by the absence of conspicuous vascular sinuses . The genus embraces a considerable range of fine and fairly coarse - ribbed forms . Divergent forms are character- ized by ...
Page 56
... Interior of valve with more or less regular , fine radial vascular markings . Sharply defined internal ribbing restricted to a very narrow peripheral zone . In the interior of the ventral valve a pair of strong , parallel dental plates ...
... Interior of valve with more or less regular , fine radial vascular markings . Sharply defined internal ribbing restricted to a very narrow peripheral zone . In the interior of the ventral valve a pair of strong , parallel dental plates ...
Page 57
... interior of the dorsal valve the cardinal process is typically small and short , with a fine fissure on its posterior face . Crural plates small , the inner faces diverging towards the front . Dental sockets small . Muscle - scars very ...
... interior of the dorsal valve the cardinal process is typically small and short , with a fine fissure on its posterior face . Crural plates small , the inner faces diverging towards the front . Dental sockets small . Muscle - scars very ...
Page 58
... Interior of valve traversed by fine trans- verse ridges . Other characters as for genus . • In the ventral valve a ... interior with rapier - like cardinal process , and slender , high crural plates of the Wattsella type . Dental sockets ...
... Interior of valve traversed by fine trans- verse ridges . Other characters as for genus . • In the ventral valve a ... interior with rapier - like cardinal process , and slender , high crural plates of the Wattsella type . Dental sockets ...
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Common terms and phrases
Acton Scott adductor africanum alloys atoms augite biotite cell charged particles chromatophore coenobia coenobium coenocytes compound convex crural pits crural plates crystals curve D.Sc Dalmanellida density divaricator Donegal dorsal valve effect electrons emission energy Exterior felspar field gametes genera genus granite Harknessella Harnage heat Heterorthis Horderley hornblende hysteretic intensity interior Internal mould ions kloedeni large number lateral folds lobes M.Sc Manchester mass median Memoirs mesial mould of dorsal mould of ventral mudstone muscle area nuclei observed obtained occurs Onniella Ordinary Meeting origin Ostracods oxygen phase plasticine platinum positions posterior primary Professor W. L. BRAGG pyrenoids radiation ratio relations Resserella reticulatum rib-system ribs ridge River Onny rocks Rosguill scars scattering schist Sciences sectors shell significant sinus Société Society solid solution species specimens stage stars structure sub-atomic swarm-spores temperature valve plasticine cast ventral valve Wattsella wattsi wire xenoliths