Geochemical Insights Into Provenance of the Middle Devonian Hamilton Group of the Central Appalachian Basin, U.S.A.

2018 ◽  
Vol 88 (10) ◽  
pp. 1153-1165 ◽  
Author(s):  
Brittany N. Hupp ◽  
Amy L. Weislogel
Keyword(s):  
Middle Devonian ◽  
Appalachian Basin ◽  
Hamilton Group

Delthyris sculptilis Hall, 1843 (Brachiopoda) from the Middle Devonian Hamilton Group is a Megakozlowskiella

1986 ◽  
Vol 60 (4) ◽  
pp. 965-967
Author(s):  
William F. Koch
Keyword(s):  
New York ◽  
North America ◽  
Middle Devonian ◽  
Eastern North America ◽  
Upper Limit ◽  
Hamilton Group

Delthyris sculptilis Hall, 1843, from the Middle Devonian Hamilton Group of New York and equivalent rocks elsewhere in eastern North America, has long been assigned to the genus Delthyris or, in certain older studies, to the genus Spirifer. Recent restudy of this brachiopod shows that it belongs to the genus Megakozlowskiella Boucot, 1962. This extends the upper limit of Megakozlowskiella from the Eifelian (Southwood Stage, Onondaga Limestone in New York) to the Givetian (Tioughnioga Stage, Moscow Formation of the Hamilton Group in New York).

Clustered trilobite assemblages in the Middle Devonian Hamilton Group

Lethaia ◽  
1985 ◽  
Vol 18 (2) ◽  
pp. 85-103 ◽  
Author(s):  
STEPHEN E. SPEYER ◽  
CARLTON E. BRETT
Keyword(s):  
Middle Devonian ◽  
Hamilton Group
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