LATE PENNSYLVANIAN (VIRGILIAN) TO EARLY PERMIAN (LEONARDIAN) CONODONT BIOSTRATIGRAPHYOF THE “WOLFCAMP SHALE,” NORTHERN MIDLAND BASIN, TEXAS

2019 ◽  
pp. 245-261
Keyword(s):  
Early Permian ◽  
Midland Basin

Detrital zircon provenance evidence for an early Permian longitudinal river flowing into the Midland Basin of west Texas

2020 ◽  
Vol 62 (9) ◽  
pp. 1224-1244
Author(s):  
Lowell Waite ◽  
Majie Fan ◽  
Dylan Collins ◽  
George Gehrels ◽  
Robert J. Stern
Keyword(s):  
Detrital Zircon ◽  
Early Permian ◽  
Midland Basin ◽  
West Texas

An early Permian coastal flora dominated by Germaropteris martinsii from basinal sediments in the Midland Basin, West Texas

2016 ◽  
Vol 459 ◽  
pp. 409-422 ◽  
Author(s):  
Robert W. Baumgardner ◽  
William A. DiMichele ◽  
Nathalia de Siqueira Vieira
Keyword(s):  
Early Permian ◽  
Midland Basin ◽  
West Texas

Early Permian conodont assemblages from the Wolfcamp Shale, Midland Basin, West Texas

1991 ◽  
Vol 65 (4) ◽  
pp. 670-677 ◽  
Author(s):  
Scott M. Ritter ◽  
John F. Baesemann
Keyword(s):  
Single Individual ◽  
Early Permian ◽  
Midland Basin ◽  
West Texas ◽  
The Family

Nine assemblages of conodont elements have been found on bedding surfaces of the “Wolfcamp Shale’ from the Midland Basin, Texas. Four of these assemblages have Pa elements assigned to Sweetognathus cf. S. inornatus. The assemblages are classified taphonomically as apparatus (remains or partial remains of a single individual) or coprolitic associations. The two apparatus assemblages indicate that Sweetognathus cf. S. inornatus possessed a seximembrate apparatus comprised of Pa, Pb, M, Sa, Sb, and Sc elements. Five of the seven coprolitic associations contain numerous elements (50–100) and/or multiple pairs of Pa elements representing the presumably ingested remains of two or more conodonts.The “Wolfcamp Shale’ assemblages are significant because 1) they confirm the polygnathacean affinity of the family Sweetognathidae, 2) they represent the youngest polygnathacean assemblages currently known, and 3) they permit comparison of multielement Sweetognathus with homologous elements of coeval genera such as Hindeodus, Adetognathus, Streptognathodus, and Neostreptognathodus.

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