162 



CAMBRIAN BRACHIOPODA. 



Walcott [1891b, p. 261] cites the following: 

 Linnarssonia misera=Acrotreta misera. 

 Orthis sp. 

 Stenotheca ep. 



Agnostus punctuosus Angelin. 

 Agnostus 5 sp. 



Microdiscus punctatus Salter. 

 Paradoxides davidis Salter. 

 Paradoxides hicksi Salter. 

 Paradoxides sp. i 



Sa (same horizon as 1). (For stratigraphic position and association, see p. 140.) Middle Cambrian: Above 

 and to the north of the limestone, in the shales of the Paradoxides zone. Topsail Head, Conception Bay, 

 Newfoundland (C. D. Walcott, 1888). 

 Lingulella ferruginea. 



2b. Lower Cambrian: Limestone just north of Beman Park, in the northeastern part of the city of Troy, Troy 

 quadrangle (U. S. G. S.), Rensselaer County, N. Y. (H. E. Dickhaut, 1899). 



Anopolenus venustus Billings. 

 Conocoryphe elegans (Hartt). 

 Ctenocephalus matthewi (Hartt). 

 Erinnys venulosa Salter. 

 Ptychoparia robbi Hartt. 

 Ptychoparia variolaris Salter. 

 Holocephalina infiata Hicks. 

 Agraulos socialis Billings. 



Micromitra (Paterina) labradorica. 

 Bicia gemma. 

 *Bicia whiteavesi. 



Obolella crassa. 

 Botsfordia caelata. 

 Billingsella salemensis. 



2d. Lower Cambrian: Arenaceous limestone in the knobs just east of Beman Park and southwest of Brunswick, 

 near Troy, Troy quadrangle (U. S. G. S.), Rensselaer County, N. Y. (H. E. Dickhaut, 1899). 

 Obolella crassa. 



2e (see 3b). (For stratigraphic position and association, see p. 132.) Middle Cambrian: Shale 25 feet (7.6 m.) 

 above the basal quartzite, Seeley Street, St. John, St. John County, New Brunswick (S. W. Loper, 1899). 

 Protorthis billingsi. 



2f (3 feet below 2g; see 308e). (For stratigraphic position and association, see p. 133.) Middle Cambrian: Sand- 

 stones of Division Ibl of Matthew's [1895a, p. 108] Protolenus zone, Hanford Brook, St. John County, 

 New Brunswick (C. D. Walcott and S. W. Loper, 1899). 



*Lingulella martinensis. 

 Acrothele prima. 



*Acrotreta infiata. 



Acrotreta sagittaHs transversa. 



2g (3 feet above 2f and underljdng 2h; see 308e). (For stratigraphic position and association, see p. 133.) Middle 

 Cambrian: Sandstones of Division Ibl of Matthew's [1895a, p. 108] Protolenus zone, Hanford Brook, 

 St. John County, New Brunswick (C. D. Walcott and S. W. Loper, 1899). 



Lingulella martinensis. I Acrotreta sagittalis. 



*Acrotreta infiata. ] Acrotreta sagittalis transversa. 



Matthew cites the following additional species fi-om Division Ibl: 

 Acrothele matthewi? (Hartt). I *Hipponicharion eos Matthew. 



*Acrothele matthewi prima Matthew=Acrothele prima. | Beyrichona tinea planata (Matthew). 



21i (overlying 2g; see 301). (For stratigraphic position and association, see p. 133.) Middle Cambrian: Sandstones 

 of Division lb2 of Matthew's [1895a, p. 108] Protolenus zone, Hanford Brook, St. John County, New 

 Brunswick (C. D. Walcott and S. W. Loper, 1899). 



Lingulella martinensis. 

 Trematobolus pristinus. 

 Acrothele prima. 



*Acrothele prima costata. 

 Acrotreta sagittalis transversa. 



Matthew cites the following additional species from Division lb2: 



Beyrichona tinea Matthew. 

 *Beyrichona tinea planata (Matthew). 

 Beyrichona rotundata Matthew. 



Beyrichona ovata Matthew. 

 Indiana secunda Matthew. 



21 (underlying 2k). (For stratigraphic position and association, see p. 132.) Middle Cambrian: Sandstones of 

 Division lb3 of Matthew's [1895a, p. 108] Protolenus zone, Hanford Brook, St. John County, New Bruns- 

 wick (C. D. Walcott and S. W. Loper, 1899). 



Lingulella ferruginea?. Acrothele prima. 



Lingulella martinensis. . Acrothele prima costata. 



Botsfordia sp. Acrotreta sagittalis magna. 



Trematobolus pristinus. Acrotreta sagittalis transversa. 



