Frasnian age (upper devonian) key section biostratigraphic characteristic of Voronezh anteclise middle part (well 16, Schigry, Nizhnekrasnoe village, Kursky region)
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Division Rhyniophyta - Upper Silurian to Middle Devonian
Among the oldest convincing fossils of early vascular land plants are those of the Division Rhyniophyta. The members of this division consist of: (1) simple axes with cuticle, stomates, epidermis, cortex and a terete (circular) centrarch xylem (xylem development occurs from the center of the stem to the periphery), without well-developed appendages or roots; (2) simple, isotomous branching syst...
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F. G o n z á l e z e t a l . G e o l o g i c a A c t a , 1 3 ( 4 ) , 3 4 5 3 6 1 ( 2 0 1 5 ) D O I : 1 0 . 1 3 4 4 / G e o l o g i c a A c t a 2 0 1 5 . 1 3 . 4 . 7 Upper Frasnian palynomorphs from the Catalan Coastal Chain 346 defined as Les Vilelles unit in the Priorat Massif (Sáez, 1982), is confusing. On the basis of the palynological content of two closely collected shale samples, Colodrón...
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The Rhipidistia (Osteichthyes, Crossopterygii) comprise three superfamilies of Paleozoic fossil fishes, the Holoptychoidea, Osteolepoidea and Rhizodontoidea. Of these the members of the Holoptychoidea (families Holoptychidae and Porolepidae) are by far the least well known, and consequently there exists a considerable gap in our knowledge of the evolution of the Rhipidistia as a whole. The aim ...
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Terry Engelder, a leading authority on the recent Marcellus gas shale play, received his B.S. degree from Pennsylvania State University (1968), his M.S. degree from Yale University (1972), and his Ph.D. from Texas A&M University (1973). He is currently a professor of geosciences at Penn State and has previously served on the staff of the U.S. Geological Survey, Texaco, and LamontDoherty Earth O...
متن کاملHigher Incision at Upper Part of Lower Segment Caesarean Section.
INTRODUCTION To determine if the upper part of the lower segment of the uterus is a better site for cesarean incision then the traditionally used lower end. METHODS This is a case-control study (1:1 ratio) conducted from 1(st) October 2012- 30(th) September 2013 observed between transverse incision at the upper part of the lower segment versus traditional lower segment of the uterus. Two hund...
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ژورنال
عنوان ژورنال: Стратиграфия
سال: 2019
ISSN: 0869-592X
DOI: 10.31857/s0869-592x27280-106