A Monograph of British Belemnitidœ: Jurassic |
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Common terms and phrases
abbreviatus acuarius alveolar apex alveolar cavity alveolar region alveolus Ammonites angle apicial region appears beds Belemnite-bed Belemnites Blainville breviformis canaliculatus collection compressed conical conoidal conotheca cross diameter cross section cylindroidal D'Orb D'Orbigny DIAGRAM distinct Dorsal aspect dorso-lateral grooves Dundry elliptical elongate elongatus examples excentric EXPLANATION OF PLATE figure flattened forms fossils fusiform Geol greatest diameter Greatest length observed hastate Ilminster Inferior Oolite Kimmeridge Clay laminæ Lateral aspect lateral furrows lateral grooves Lateral view Locality Longitudinal section Lower Lias Lyme Regis Marlstone Middle Lias Miller n. s. Pl nearly circular oval Owenii Oxford Clay Oxford Museum paxillosus Phillips phragmocone post-alveolar region Proportions Quenstedt Reference Robin Hood's Bay Saltwick Schlotheim sections show seen septa sheath shell Simpson siphuncle Sowerby species spherule Stonesfield striæ striated striation sulcatus taken at 100 tapering Transverse section tripartitus Upper Lias variety Ventral aspect ventral face ventral groove ventral radius Voltz Whitby Museum Yorkshire young specimens