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The Tadpoles of Bufo cognatus Say

By Hobart M. Smith
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About This Book

The note provides a concise morphological and developmental account of Bufo cognatus tadpoles based on two series of field-collected specimens. It questions earlier descriptions as likely derived from dried or transforming material and presents consistent observations of mouthpart structure with modest variation in papillary extent and lower labial tooth rows. Measurements and staging are given, with hind limbs appearing near 15 mm, forelimbs near 28 mm, and an adultlike dorsal pattern evident by about 20 mm. The author highlights a strong resemblance to tadpoles attributed to Bufo compactilis and recommends direct comparison of positively identified larvae to clarify their relationship.

About the Author

Smith, Hobart M. portrait

Hobart M. Smith

Hobart M. Smith was a notable herpetologist recognized for his contributions to the study of reptiles and amphibians. His research focused on various species, particularly within the context of hybridization and morphological variations. Among his significant works is "Hybridization Between Two Species of Garter Snakes," which explores genetic interactions between snake species. Smith also examined the anatomical variations in turtles, as seen in "Kyphosis and other Variations in Soft-shelled Turtles," and contributed to the understanding of amphibian development with his study on the tadpoles of Bufo cognatus. His scholarly work has enriched the field of herpetology and continues to be referenced by researchers.

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