palaeontology: eastern Massachusetts. 55 



1856. Sogers, W. B. Notes on Paradoxides from Braintree. (Bost. 

 Soc. Nat. Hist., Proc, vol. 6, pp. 27-29, 40-44.) Announcement 

 of first discovery of tribolites in situ in Braintree, and history 

 of first specimen. 



1856. Stodder, Charles. Note on a specimen of Paradoxides harlani from 

 Braintree. (Bost. Soc. Nat. Hist., Proc, vol. 6, p. 369.) De- 

 scribes a well-preserved specimen. 



1856. Sogers, W. B. Discovery of Palaeozoic fossils in eastern Massa- 

 chusetts. (Am. Journ. Sci., 2d sei\, vol. 22, p. 296-298.) 

 Announces discovery of Paradoxides at Braintree. 



1856. Sogers, W. B. Proof s of the Protozoic age of some of the altered 

 rocks of eastern Massachusetts, from fossils recently discovered. 

 (Am. Acad. Sci., Proc. , vol. 3, pp. 315-318.) Announcement of 

 discovery of Paradoxides at Braintree, and discussion of its 

 bearing on the classification of our rocks. 



1858. Lea, Isaac. On the Trilobite formation at Braintree, Mass. 



(Phil. Acad. Sci., Proc, vol. 9, p. 205.) Description of quarry, 

 and occurrence of fossils. 



1859. Jackson, C. T. Note on Paradoxides harlani and related species. 



(Bost. Soc. Nat. Hist., Proc, vol. 7, p. 54.) Compares P. harlani 

 with a species from St- Mary's bay, N. P. (p. 75) and gives meas- 

 urements of two specimens. 



1859. Sogers, W. B. Note on Paradoxides. (Bost. Soc Nat. Hist., Proc, 



vol. 7, p. 86. Compare P. harlani and P. noviapenus. 



1860. Barrande, J. Note sur la faune primordiale. (Bull, de la Soc. 



Geol. de France, tome 17, pp. 542-554.) Comparison of P. ben- 

 netti and P. spinosus (P. harlani). 

 1860. Barrande, J. On the Primordial fauna and the Taconic system. 

 (Bost. Soc. Nat. Hist., Proc, vol. 7, p. 369.) P. harlani identi- 

 cal with P. spinosus of Bohemia. 



1860. Ordway, Alhert. Notes on Paradoxides harlani. (Bost. Soc. Nat. 



Hist., Proc, vol. 7, p. 427.) Comparison of P. harlani and P. 

 spinosus proves identity of each. 



1861. Ordway, Albert. On the supposed identity of Paradoxides harlani 



Green, with the Paradoxides spinosus Boeck. (Bost. Soc. Nat. 

 Hist., Proc, vol. 8, pp. 1-5, figs. 1, 2.) Compares the two spe- 

 cies and gives figures of each. The species are distinct. 



1861. Jackson, C. T. Note on Paradoxides. (Bost. Soc. Nat. Hist., Proc, 

 vol. 8, p. 58.) P. harlani, P.bennMi and P. spinosus closely re- 

 lated. 



1861. Sogers, W. B. On fossiliferous pebbles of Potsdam rocks in Car- 

 boniferous conglomerate north of Fall River, Mass. (Bost. 

 Soc. Nat. Hist., Proc!, vol. 7, pp. 389-391.) Quartzite pebbles 

 contain Lingula, resembling L. prima and L. antiqua. (Speci- 

 mens now in Bost. Soc. Nat. Hist, collection.) 



1861. Marcou, Jules. On the black slate from Braintree, Mass., contain- 

 ing Paradoxides, etc. (Bost. Soc. Nat. Hist., Proc, vol. 7, pp. 

 357, 358.) Compares Braintree beds to those of Newfoundland 



