PAL^ONTOLOGT : EASTERN M ASSACBUSETTS. 55 



1856. liogera, W. B. Notes on Paradoxides from Braintreo. (Best. 

 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 trom 

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

 scribes a well-preserved specimen. 



1856. Bogers, If. B. Discovery of Palaeozoic fossils in eastern Massa- 

 cliusetts. (Am. Journ. Sci., 2d ser., vol. 22, p. 296-298.) 

 Announces discovery of Paradoxides at Braintree. 



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

 roclcs 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 

 Ijearing on the classification of our rocks. 



1858. Lea, Isaac. On tlie 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. F. (p. 75) and gives meas- 

 urements of two specimens. 



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



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



1860. Barrande, .7. 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, ./. On the Primordial fauna and the Taconic system. 

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

 cal witli 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, Alhert. 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.bennetti fLn6 P. spi/io.«Ms closely re- 

 lated. 



1861. Rogers, 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.) Quartzlte pebbles 

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

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



1861. Mareou, .Jules. On the l)lack slate from Braintree, Mass., contain- 

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

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



