New Species of Calymenidae from Scotland and Ireland

1 October 1949

journal article
research article
Published by Cambridge University Press (CUP) in Geological Magazine

Vol. 86 (5) , 313-323
https://doi.org/10.1017/s0016756800075142

Abstract

Four new species of Calymenidae distinctive of horizons of strati-graphical interest are described. Observations of two pairs of anterior pits in the axial furrows of Platycalymene éire sp. nov. and P. duplicata (Murchison), not corresponding with the first lateral furrows of the glabella, indicate a trisegmental origin of the frontal lobe. A possible correspondence of the trilobite hypostome with chelicerae of Arachnids is propounded.

Keywords

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