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Graptolites of the Monograptus hercynicus Type recorded from Malaya

โœ Scribed by JONES, C. R.


Book ID
109659163
Publisher
Nature Publishing Group
Year
1967
Tongue
English
Weight
130 KB
Volume
215
Category
Article
ISSN
0028-0836

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## Abstract An electroretinogram (ERG), evoked by light stimuli, was recorded from ocelli of __Polyorchis penicillatus__ (Hydromedusae). The ERG is a polyphasic response with a positive potential change at the onset of illumination followed by a slower biphasic pulse, and a positive deflection at t