Ramon Posted September 13, 2019 Share Posted September 13, 2019 Hello, I recently acquired some fossils from the Vallecillo member of the Agua Nueva formation. The Agua Nueva Lagerstätten is famous for its perfectly preserved fish and marine reptiles. It is late cenomanian in age about 90-93 million years old. I got two large ammonites from one of my trips to Mexico. I was wondering if someone can identify it to the family, and possibly the genus level. They are preserved in a finely bedded shale. This one one is the largest one it is about 8 inches long. Quote Link to post Share on other sites
Ramon Posted September 13, 2019 Author Share Posted September 13, 2019 This one is smaller with a smoother shell, it is about 6 inches long Quote Link to post Share on other sites
PFOOLEY Posted September 13, 2019 Share Posted September 13, 2019 An ammonite fauna is mentioned in this paper... The Fossil Lagerstätte at Vallecillo, North-Eastern Mexico: Pelagic Plattenkalks related to Cenomanian-Turonian Boundary Anoxia ...might be of some use. 1 Quote Link to post Share on other sites
Ramon Posted September 13, 2019 Author Share Posted September 13, 2019 9 minutes ago, PFOOLEY said: An ammonite fauna is mentioned in this paper... The Fossil Lagerstätte at Vallecillo, North-Eastern Mexico: Pelagic Plattenkalks related to Cenomanian-Turonian Boundary Anoxia ...might be of some use. Thank you!! Quote Link to post Share on other sites
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