Neospirifer
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- Catalogue Palaeontology Invertebrates (Updated July 2020)
- Spiriferida, Trigonotretidae) from Ixtaltepec Formation, Pennsylvanian of Oaxaca State, Southern Mexico
- Pennsylvanian Brachiopods and Biostratigraphy in Southern Sangre De Cristo Mountains, New Mexico
- Late Paleozoic Stratigraphy of Central Cochise County Arizona
- Redalyc.Braquiópodos Y Trilobite Del Pérmico Inferior Del Noroeste Del
- Marker Zones in Permian Formations Of
- A Thesis Submitted to the Faculty of the in Partial Fulfillment of the Requirements for the Degree of in the Graduate College
- A B62 New Front COVER
- Resumenes Del XIII SAPP.Pdf
- Stratigraphy and Paleontology of the Revised Type Section for the Tahkandit Limestone (Permian) in East-Central Alaska
- Randol Wehrbein Thesis.Pdf
- Ohio Fossils
- Boletin Geolo Gico
- 2004 Macey Center New Mexico Institute of Mining and Technology Socorro, New Mexico
- Classification, Paleoecology, and Biostratigraphy of Crinoids from the Stull Shale (Late Pennsylvanian) of Nebraska, Kansas, and Iowa Roger K
- Permian Sedimentary Facies, Central Guadalupe Mountains, New Mexico
- Brachial Supporting Structure of Spiriferida (Brachiopoda)
- Some Spiriferid Brachiopods from the Permian of Timor (Indonesia)