Lower Cretaceous of MarylandLower Cretaceous. State Geological Survey of Maryland
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منابع مشابه
lower cretaceous in iran
at the boundary between jurassic and cretaceous, because of late kimmerian movements, the sea ragressed from many areas of north and cantral iran, and many continental areas rose, which included a number of differentiated basins. the boundary between jurassic and cretaceous in these parts of iran is usually marked by a big diastem or by red, clastic and evaporitic sediments. the whole or part o...
متن کاملMicrobiostratigraphy of the Lower Cretaceous strata from South East of Maragheh, NW Iran
For the microbiostratigraphical studies, a stratigraphical section (named Dareh-Goshayesh) has been selected in southeast of Maragheh, Northwestern Iran. The thickness of successions in the selected stratigraphic section is measured about 223.6 m. The mentioned studied stratigraphic section is composed of two clastic and carbonate units. This succession unconformably overlies the Lar Formation ...
متن کاملMicrobiostratigraphy of the Lower Cretaceous strata in South East of Maragheh, NW Iran
For the lithostratigraphy and microbiostratigraphical studies, a stratigraphical section (named Dareh-Goshayesh) has selected and is located in southeast of Maragheh city, south of eastern Azerbaijan province in the northwest of Iran. The thickness of successions in the selected stratigraphic section is measured about 223.6 m. The mentioned studied stratigraphic section is composed of two clast...
متن کاملVertebrate Paleontology of the Cloverly Formation (Lower Cretaceous), II: Paleoecology
Vertebrate microfossil assemblages in terrestrial formations are a promising source of data on the structure of fossil metacommunities. However, the degree to which these deposits capture true, metacommunity-level samples is unknown. Individual deposits may be biased in ways that limit their utility for intraand inter-formation comparisons. This study describes the composition of ten vertebrate...
متن کاملA Therian from the Lower Cretaceous (albian) of Texas
Mammals of metatherian-eutherian grade are represented in a collection recovered from a Wise County, Texas, locality of Lower Cretaceous (Albian) age. The form, or forms, are distinctly primitive as evidenced by the very small low protocones, large stylar cusps, and wide stylar shelf. The presence of well-developed and separate metacones at such an early date would seem to place Deltatheridium ...
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ژورنال
عنوان ژورنال: The Journal of Geology
سال: 1912
ISSN: 0022-1376,1537-5269
DOI: 10.1086/622034