The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 203
... Permian - Triassic evolution 18 : 695g pet ownership responsibilities 14 : 150g poisonous animals , table 6 14 : 613c shell covering and beak composition 9 : 668c Trionyx reproductive tract , illus . 6 15 : 712 Turtle , one - man ...
... Permian - Triassic evolution 18 : 695g pet ownership responsibilities 14 : 150g poisonous animals , table 6 14 : 613c shell covering and beak composition 9 : 668c Trionyx reproductive tract , illus . 6 15 : 712 Turtle , one - man ...
Page 289
... Permian time ( from 280,000,000 to 225 , - 000,000 years ago ) , but a great increase in sands and clastic deposits generally attest to the effects of orogenic ( mountain - building ) ac- tivity in Late Permian time . The geosynclinal ...
... Permian time ( from 280,000,000 to 225 , - 000,000 years ago ) , but a great increase in sands and clastic deposits generally attest to the effects of orogenic ( mountain - building ) ac- tivity in Late Permian time . The geosynclinal ...
Page 505
... Permian marine rocks ( the Permian Period began 280,000,000 years ago and lasted 55,000,000 years ) . Waagenoceras Reprinted from H Shimer and R. Shrock , Fossil Index of North America , by permission of the MIT Press , Cambridge , Mass ...
... Permian marine rocks ( the Permian Period began 280,000,000 years ago and lasted 55,000,000 years ) . Waagenoceras Reprinted from H Shimer and R. Shrock , Fossil Index of North America , by permission of the MIT Press , Cambridge , Mass ...
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