. Animal biology. Zoology; Biology. Fig. 264.—Tuatara, Sphenodon punctatum (Gray), of New Zealand, an example of the Rhynchocephalia. X about j^. Compiled from several sources. 418. Rhynchocephalia.—The only representative of this order is the tuatara of New Zealand, Sphenodon punctatum (Gray). It was formerly found throughout New Zealand but is now restricted to some small neighboring islands and is threatened with extinction. It is lizard-like (Fig. 264), about two feet in length, Hves in burrows, is nocturnal in its habits, and feeds on any other animal it can secure. Among other structural
. Animal biology. Zoology; Biology. Fig. 264.—Tuatara, Sphenodon punctatum (Gray), of New Zealand, an example of the Rhynchocephalia. X about j^. Compiled from several sources. 418. Rhynchocephalia.—The only representative of this order is the tuatara of New Zealand, Sphenodon punctatum (Gray). It was formerly found throughout New Zealand but is now restricted to some small neighboring islands and is threatened with extinction. It is lizard-like (Fig. 264), about two feet in length, Hves in burrows, is nocturnal in its habits, and feeds on any other animal it can secure. Among other structural features which it possesses is a more highly. Fig. 265.—North American alligator, Alligator mississippiensis (Daudin), an example of the Crocodilia. X about He- From several sources. developed pineal eye than is possessed by any other animal. This is an eye developed from a median dorsal outgrowth of the diencephalon; it is rudimentary in all living vertebrates, being most highly developed in lizards, and is often called the pineal gland or pineal body. It is believed to have functioned as an eye in types now extinct and in living forms it has been looked upon as a gland of internal secretion. Although this animal has some characteristics which belong to fossil reptiles and has long been looked upon as the most primitive of existing reptiles,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wolcott, Robert Henry, 1868-1934. New York ; London : McGraw-Hill Book Company, Inc.
Size: 2593px × 964px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcoll, booksubjectbiology, booksubjectzoology
