1 8 6 8 -1 9 2 7 ) P io n e e r s tu d e n t o f A m e r ic a n P e r m ia n a m m o n o id fa u n a s The strata of the Guadalupe Mountain region can be regarded as the classic Permian of North America. Over 80 years ago these rocks and their fossils were described in some detail, and the first comprehensive report on the marine Permian faunas of North America was based on specimens from the Guadalupe and the Delaware mountains. Further more, recent stratigraphic studies in this area have shown that the strata there are particularly significant; as they are transitional in nature, they enable us to correlate the typical marine fossiliferous Permian of the Southwest with contemporaneous beds that are nonfossiliferous. It is the purpose of this report to achieve an understanding of the ammonoid faunas of the Guadalupe Mountain area and to compare and relate these faunas with those found in the well-known Glass Mountain sequence.Naturally, it is impossible to ascertain the full significance of any fauna b y a study of specimens from a limited area, and the writers have therefore attempted to take advantage of the rather extensive collections at their disposal. All the Permian ammonoids that have resulted from the recent work of the United States Geological Survey in the Guadalupe Mountain area have been made available to the writers. Also, they have very large collections from the Glass Mountains, which add appreciably to the num ber of species known from there, and smaller collections from the Sierra Diablo and the Hueco, Finlay, and Chinati mountains of west Texas and from various localities in north-central Texas. Furthermore, the writers have been able to study essentially all the Permian ammonoids known from other localities in North America, including Coahuila, New Mexico, Kansas, Wyoming, British Columbia, and Greenland. Finally, they have representative collections from Sicily, the Ural region, the Salt Range, Timor, and Australia. Because of the world-wide importance of ammonoid zones, they are suggesting intercontinental correlations of Permian ammonoid-bearing beds.The great majority of the specimens on which this report is based were collected under the supervision of Philip B. King and were loaned to the writers for study through the courtesy of the United States Geological Survey. They were assembled in the field by George H . Girty, J. Brookes Knight, Philip B. King, and particularly H . C. Fountain. M r. Fountain devoted several months to this work, and any merit that this report may possess is primarily a result of his care and diligence. Also, Dr. Girty kindly loaned the type specimens which he illustrated and described in 1908. Professors Charles Schuchert and C. 0 . Dunbar sent the extensive INTRODUCTION AND ACKNOWLEDGMENTS 1 2 PE RM IA N AM MONOIDS O F GU ADALU PE M OU NTAIN REGION collections of Permian ammonoids in the Yale Peabody Museum from Texas, Coahuila, and Sicily; those from Texas and Coahuila, which were particularly helpful, were assembled in the field by R . E. King over a period o...
The name of the type species of each genus and subgenus is given next following the generic name with its accompanying author and date, or after entries needed for definition of the name if it is involved in homonymy. The originally published combination of generic and trivial names for this species is cited, accompanied by an asterisk (*), with notation of the author and date of original publication. An exception in this procedure is made, however, if the species was first published in the same
NAME CHANGES IN RELATION TO GROUP CATEGORIES SPECIFIC AND SUBSPECIFIC NAMESDetailed consideration of valid emendation of specific and subspecific names is unnecessary here because it is well underxu
SummaryCeratitic ammonoids from the Greville Formation in the Nelson Regional Syncline, South Island of New Zealand, were described as a new genus and species of the Ophiceratidae, Durvilleoceras woodmani, and dated as ‘late Middle Permian’ (Waterhouse, 1973). In fact, Durvilleoceras differs from all known Permian ammonoids in both conch form and sutural pattern, but closely resembles lower Triassic ceratites. Structural and sedimentologic complexities within the Nelson Syncline are such that stratigraphic interpretations are questionable, and the fauna of both the Greville and adjacent formations is sparse. Consequently, we consider that Durvilleoceras is best interpreted as a middle Scythian ceratite of the family Flemingitidae.
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