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ly; the very abundant and varied ammonoid cephalopods, which are now
extremely useful for correlating Triassic rocks over wide areas; the reptiles, which
experienced a period of extensive adaptive radiation and invaded varying ...
Tritylodon, genus of extinct, advanced mammal-like reptiles found as fossils in
Late Triassic rocks in southern Africa (the Triassic Period began 225,000,000
years ago and lasted 35,000,000 years). Tritylodon is representative Tritylodon ...
Red-eared turtle (Pseudemy's scripta elegans) John H. Gerard Turtles are found
in most parts of the world and have existed in relatively the same form since the
Triassic (about 225,000,000 years ago). Most of the 200 to 250 living species are
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review