Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Томи 41 – 42The Society, 1902 |
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Сторінка 114
... South Dakota, there is a series of sandstone lenses known as the Metamynodon sandstones. These sandstones are faunally distinct from the surrounding clays. At the top of the Oreodon beds in the same region, these sandstone lenses are ...
... South Dakota, there is a series of sandstone lenses known as the Metamynodon sandstones. These sandstones are faunally distinct from the surrounding clays. At the top of the Oreodon beds in the same region, these sandstone lenses are ...
Сторінка 113
... South Dakota , and covers the greater portion of the plains of eastern New Mexico and Colorado , southeastern Wyoming and western Texas , Oklahoma , Kansas , Nebraska and South Dakota . Within this 1700 feet of Tertiary deposits there ...
... South Dakota , and covers the greater portion of the plains of eastern New Mexico and Colorado , southeastern Wyoming and western Texas , Oklahoma , Kansas , Nebraska and South Dakota . Within this 1700 feet of Tertiary deposits there ...
Сторінка 114
... South Dakota , there is a series of sandstone lenses known as the Metamynodon sandstones . These sandstones are faunally distinct from the sur- rounding clays . At the top of the Oreodon beds in the same region , these sandstone lenses ...
... South Dakota , there is a series of sandstone lenses known as the Metamynodon sandstones . These sandstones are faunally distinct from the sur- rounding clays . At the top of the Oreodon beds in the same region , these sandstone lenses ...
Сторінка 115
... South Dakota , Nebraska , Wyoming and Colo- rado . Dr. W. D. Matthew , in his most excellent memoir on the Fossil Mammals of the Tertiary of Northeastern Colorado , has very appropriately named these clays the Leptauchenia Beds , from a ...
... South Dakota , Nebraska , Wyoming and Colo- rado . Dr. W. D. Matthew , in his most excellent memoir on the Fossil Mammals of the Tertiary of Northeastern Colorado , has very appropriately named these clays the Leptauchenia Beds , from a ...
Сторінка 117
... south of Harrison , Nebraska , where they are of unknown thickness and immediately overlie the Harrison beds . Toward the south they pass beneath the Ogalalla formation . According to the above classification all the Miocene deposits of ...
... south of Harrison , Nebraska , where they are of unknown thickness and immediately overlie the Harrison beds . Toward the south they pass beneath the Ogalalla formation . According to the above classification all the Miocene deposits of ...
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Africa AMER AMERICAN PHILOSOPHICAL SOCIETY animals appear April Asia Australia auta autic beds belong blastopore body brachiopods Cambaroides Cambarus canals cells Central chromosomes cœlom connection contains crude oil Crustacea crystals curves Decapods deposits distillates distribution division domeykite drones eggs enteron Eocene equation evidence existence fact fauna Feb'y fertilization follicle formation forms fossils freshwater genera genus geographer geological Greater Antilles hydrocarbons islands Jan'y Jurassic land larva larvæ later Lower Cretaceous male mantle mass Mesozoic method Mexico Miocene nature Noctua North northern nuclei observed Ocean Oligocene origin parthenogenesis Pennsylvania petroleum Philadelphia PHILOS plate Pliocene polar body posterior Potamobius present probably PROC produced Prof queen region relation represented river sandstones separated shown solution South America southern species spermatocyte spermatogonia spermatozoa stage Terebratulina Tertiary theory tion Upper Cretaceous Zool