. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. '''' 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 numero
. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. '''' 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£E, with a smaller rib between the larger ones, the Avholc being closely intersected by fine concentric lines, thus giving to 'he longitudinal ribs a crcnulated appearance. Professor De Koninck coincides in my identification. " Productus.âAlthough Sir 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. 'â 'â Productus scmireticulatus, Martin (Fig. 97). 'â¢'Anomites semireticidalus, 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 arc exactly similar to those found in Europe. Producta 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. LycU's * Tlie locality is incorrectly given ShubenacacUe in the paper quoted. 11 ii. Please note that these images are extracted from scan
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
