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V.—Notes on the genus Homalonotus

Published online by Cambridge University Press:  01 May 2009

F.R. Cowper Reed
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Extract

The type of this section is the Lower Devonian species Homalonotus Herscheli (Murchison) from South Africa and the Falkland Isles. The characters of the section were stated by Salter to be as follows: “Elongate, convex; head triangular, eyes approximate on gibbous cheeks. Glabella distinct, lobeless, spinous. Thorax slightly lobed and spinous, as is also the many-ribbed pointed tail.” It should at once be stated that the type-species has neither a lobeless nor a spinous glabella, and Salter apparently added in these characters from the Rhenish H. armatus, Burm., which he included in the section. The only British form quoted by Salter is one from Devonshire based on a pygidium which does not conform to the above definition and was described under the name H. elongatus. Woodward, in reviewing the Devonian species of Homalonotus, follows Salter in including the latter species in Burmeisteria.

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Original Articles
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Geological Magazine , Volume 5 , Issue 7 , July 1918 , pp. 314 - 327
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Copyright © Cambridge University Press 1918

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