scholarly journals Lithostratigraphy, sedimentology, paleontology, organic petrology, and organic geochemistry of the Middle Devonian Ashern, Winnipegosis, and Eyot formations in east-central Alberta and west-central Saskatchewan

2002 ◽  
Author(s):  
N C Meijer Drees ◽  
G S Nowlan ◽  
M G Fowler ◽  
L D Stasiuk ◽  
D C McGregor ◽  
...  
Keyword(s):  
Middle Devonian ◽  
Organic Geochemistry ◽  
East Central ◽  
Organic Petrology ◽  
West Central

Two new Devonian spine-bearing pleurotomariacean gastropod genera from Alaska

1989 ◽  
Vol 63 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Robert B. Blodgett ◽  
David M. Rohr
Keyword(s):  
Middle Devonian ◽  
New Genera ◽  
Early Devonian ◽  
Old World ◽  
West Central ◽  
Cool Temperate ◽  
Warm Temperate

Two new spine-bearing gastropods, Chlupacispira spinosa n. gen. and sp. and Spinulrichospira cheeneetnukensis n. gen. and sp., are described from the late Early Devonian (Emsian) and early Middle Devonian (Eifelian), respectively, of west-central Alaska. These represent the earliest reported spiny pleurotomariacean gastropods. Otherwise, spinose pleurotomariaceans are known from strata no older than Carboniferous age. Spinulrichospira cheeneetnukensis n. gen. and sp. appears to represent a more highly ornamented derivative of Ulrichospira Donald. Both new genera are part of the more highly ornamented fauna which occurred in warm equatorial waters of the Old World Realm during the Early and Middle Devonian, in contrast to more weakly ornamented shells of the Eastern Americas Realm and even more weakly ornamented (almost totally “plain”) shells of the Malvinokaffric Realm. The latter two realms are thought to represent subtropical to warm temperate and cool temperate to cool polar conditions, respectively.

Sequence stratigraphy of the Early–Middle Devonian succession (Padeha Formation) in Tabas Block, East-Central Iran: Implication for mixed tidal flat deposits

Palaeoworld ◽  
2014 ◽  
Vol 23 (1) ◽  
pp. 31-49 ◽  
Author(s):  
Hamed Zand-Moghadam ◽  
Reza Moussavi-Harami ◽  
Asadollah Mahboubi
Keyword(s):  
Sequence Stratigraphy ◽  
Tidal Flat ◽  
Middle Devonian ◽  
Central Iran ◽  
East Central

Determining the petroleum-generating potential of coal using organic geochemistry and organic petrology

1988 ◽  
Vol 13 (1-3) ◽  
pp. 121-129 ◽  
Author(s):  
B. Horsfield ◽  
K.L. Yordy ◽  
J.C. Crelling
Keyword(s):  
Organic Geochemistry ◽  
Organic Petrology

Joint 61st ICCP/26th TSOP meeting: Advances in Organic Petrology and Organic Geochemistry

2010 ◽  
Vol 84 (3-4) ◽  
pp. 153
Author(s):  
João Graciano Mendonça Filho
Keyword(s):  
Organic Geochemistry ◽  
Organic Petrology
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