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A Horned Toad, Phrynosoma cornutum, from the Upper Pliocene of Kansas

โœ Scribed by Oelrich, Thomas M.

Book ID
126910631
Publisher
The American Society of Ichthyologists and Herpetologists
Year
1954
Tongue
English
Weight
352 KB
Volume
1954
Category
Article
ISSN
0045-8511

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๐Ÿ“œ SIMILAR VOLUMES

A histological basis to explain constant
A histological basis to explain constant differences in action-current response from certain points on the retina of the horned toad, Phrynosoma cornutum
โœ Clyde E. Keeler ๐Ÿ“‚ Article ๐Ÿ“… 1930 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 675 KB

## Abstract The retina of Phrynosoma cornutum bears fovea, pecten, and many varieties of cones. The light band visible in fresh retinae beneath the slit of the eyelid corresponds to a zone of action current responses characterized by a low โ€˜Bโ€™ rise (negative response of Chaffee.) The lack of respon