Maclearnia maclearni Crickmay, 1930
CRICKMAY, C. H. 1930. Fossils from Harrison Lake area, British Columbia. Bulletin of the National Museum of Canada, 63: 33-66, pls. 8-23. [p. 45, pl. 8, fig. 4; pl. 9, fig. 1]
1930 Mclearnia mclearni Crickmay, 1930
C. H. Crickmay, 1930, plates 8, 9.
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«Umbo lies at centre of hinge-line, somewhat posterior to centre of disk, giving the shell a peculiar outline. Shell is much thickened in the umbonal region. Surface smooth except for occasional growth-lines. When split the shell shows traces of fine, radial ribbing. Interior smooth except for the single, large, bilobate muscle-scar; and two curved lines of "dimples", one on each side of the umbo. These appear in the figures, as does also the central chondrophore.
Dimensions. Holotype, a right valve seen from interior aspectlength, 115 mm.; height, 112; semidiameter, 11; hinge-line, 71. Paratype, a left valve, cast of interior-height, 118; semidiameter, 25; hinge-line, 78.
Locality. Zone of aucella canadiana, west side of Harrison lake 350 yards from shore and 1,400 yards north of Deer creek.
Name. Generic and specific name after F. H. McLearn, palaeontologist.»
COLIN HAYTER CRICKMAY, 1930
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