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III.—Note on the Characters of the Hinge Plate in Aviculopecten Semicosatus, Portlock, sp

Published online by Cambridge University Press:  01 May 2009

Wheelton Hind
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Extract

Mr. John Smith, of Kilwinning, has been fortunate enough to obtain from the Lower Limestone series of Auchenmade, Ayrshire, a specimen of the left valve of Aviculopecten semicostatus, Portlock, sp., which shows the hinge plate and interior most perfectly preserved. Hitherto a study of the hinge plate of Aviculopecten has been made from specimens which were merely casts of the interior, and consequently it has been impossible to observe that portion of the hinge plate immediately interior to the umbo. The Auchenmade specimen advances our knowledge of the anatomy of the genus, and establishes a character denied for it by its author, M'Coy.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 2 , February 1906 , pp. 59
Copyright
Copyright © Cambridge University Press 1906

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