. Acadian geology : the geological structure, organic remains, and mineral resources of Nova Scotia, New Brunswick, and Prince Edward Island. Geology -- New Brunswick; Geology -- Nova Scotia; Geology -- Prince Edward Island; Paleontology -- New Brunswick; Paleontology -- Nova Scotia; Paleontology -- Prince Edward Island. '?'? Streptorhynchus crenistria, Phillips (Fig. 96). " Several crushed valves, referable to this species, occur on a speci- men of Carboniferous shale from East River, Pictou,* for which I am indebted to Dr Dawson. These valves exactly resemble certain small specimens fou
. Acadian geology : the geological structure, organic remains, and mineral resources of Nova Scotia, New Brunswick, and Prince Edward Island. Geology -- New Brunswick; Geology -- Nova Scotia; Geology -- Prince Edward Island; Paleontology -- New Brunswick; Paleontology -- Nova Scotia; Paleontology -- Prince Edward Island. '?'? Streptorhynchus crenistria, Phillips (Fig. 96). " Several crushed valves, referable to this species, occur on a speci- men of Carboniferous shale from East River, Pictou,* for which I am indebted to Dr Dawson. These valves exactly resemble certain small specimens found in several British Carboniferous shales. Their surfaces are covered with numerous radiating raised stri«, with a smaller rib between the larger ones, the whole being closely intersected by fine concentric lines, thus giving to the longitudinal ribs a crenulated appearance. Professor De Koninck coincides in ray identification. " Productus.—Although Su- C. Lyell and Dr Dawson mention seven species of this genus as having been found in the Lower Carboniferous rocks of Nova Scotia, all these, as well as the specimens I have been able to examine, can be referred to two species only, namely, P. semi- reticulatus and P. cora; and I may mention that Prof. De Koninck coincides in this view. ^^ Productus semireticidatiis, Martin (Fig. 97). ^'Anomites semireticidatus, Martin, Petrif. Derb., pi. 32, figs. 1, 2, and pi. 33, fig. 4, 1809. "This species is so well known that all I shall require to state is, that the Nova-Scotian specimens are exactly similar to those found in Europe. Prodiicta Martini, P. concinna, P. antiquata, P. Scotica, mentioned by Sir C. Lyell at p. 220 (vol. ii.) of his 'Travels in America,' as well as by Dr Dawson in various pages of his ' Acadian Geology,' belong to a single species, namely, Productus semireticidatus, Sow. The ' P. spinosa, Sow. (?) var. of P. Martini,' of Sir C. Lyell's * The locality is incorrectly given Shubenacadie in the paper qu
Size: 1939px × 1288px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthordawsonjohnwilliamsir1, bookcentury1800, bookdecade1870
