﻿HISTORICAL NOTICES. 



7 



Oxford Clay . ") 

 Kelloavays Rock ) 

 Fuller's Earth Rock 

 Inferior Oolite . 

 Marlstoxe . 



Belemnites Owenii, Pratt. 



paxillosus, Schl. 

 elongntus, Mill. 



canaliculatus, Schl. 



In 1822 the Rev. G. Young and Mr. J. Bird issued the first edition of their 

 • Geological Survey of the Yorkshire Coast.' Among the objects noticed and figured are 

 a few Belemnites : 



B. vulgaris, common in the Alum Shale (Upper Lias). 



B. excentralis, said to occur in the Oolite (of Malton), the Upper Shale (Speeton), and the Chalk. 

 B. fusiformis, from the Speeton Shale. 

 B. tubularis, from the Alum Shale. 



In the second edition (1S28) one more species, called B. compressus, is noticed, and 

 somewhat strangely figured. The names were given without reference to any works but 

 those of Sowerby and Miller, and the species here marked fusiformis and compressus 

 are not those so named by earlier writers. 



Sir H. T. de la Beche, among other proofs of his attention to the organic contents of 

 the Lias of Dorsetshire, presented to the Geological Society a drawing of a rare Belem- 

 nitic fossil, which he termed an Orthoceratite (1829). It has but a small and slender 

 guard, and a very slender phragmocone, but possesses an elongated anterior shell. Prof. 

 Huxley has described it from more perfect examples, under the generic title of Xipho- 

 teuthis. It occurs in the middle Lias of Lyme Regis. 1 



In the first volume of my work entitled 'Illustrations of the Geology of Yorkshire/ 

 1829, I noticed nine specific groups of Belemnites from the Lias and Oolites of the 

 Yorkshire coast, from my own observations among the cliffs, and still more from the rich 

 collections freely opened to be by Mr. Bean and Mr. Williamson. The public collections 

 at Whitby and York were also examined. Almost immediately after the publication of 

 this volume I visited the Strasburg Museum, and found M. Voltz busy in those excellent 

 observations which place him, in my judgment, in the very first rank of the naturalists 

 who have really studied Belemnites. From him I learned much ; and in the second 

 edition of my work already named (in 1835) the following stands as the "Synoptic List 

 of Yorkshire Species," arranged according to the strata in downward series : 



Chalk 



B. mucronatus, Sow. 

 — granulatus, Sow. 



' Mem. G'eol. Survey' ("Organic Remains"), 18G4. 



