Robichello Posted February 14, 2017 Share Posted February 14, 2017 Dear All, I am facing with a trouble concerning some ammonites found in the North of Spain, Cantabria region, close to Reinosa's village. The ammonites found, looks like belongings to the Jurassic period (Middle-Sup). I am not able to ID them because they looks belongings to differents periods (maybe Oxfordian or Callovian). Here you have a few pictures to try to identify them. I should be addressed to Perisphinctes (Dichotomoceras) and Alcidia... Thanks in advance for your help, Roberto Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 14, 2017 Share Posted February 14, 2017 Nice Finds! The attached worm tubes are a nice association. Maybe @Ludwigia can have a look and make some determinations. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Ludwigia Posted February 14, 2017 Share Posted February 14, 2017 I'm not all that familiar with Spanish species and taphonomy, but I'd place your finds in the Oxfordian. The small one looks like it may be a Taramelliceras and the larger one is probably a member of the Perisphinctidae. Try asking @phylloceras. He may be able to recognize these better than me since he's from Spain. 4 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Robichello Posted February 14, 2017 Author Share Posted February 14, 2017 Thanks Fossildude19 & Ludwigia for your reply, hope @phylloceras can add info to my question. Link to comment Share on other sites More sharing options...
abyssunder Posted February 17, 2017 Share Posted February 17, 2017 I think, first of all you have to know the geological settings, exact location of the finds, geological age/stage, Formation name, stratigraphy, etc. The Catabria region is huge, also a little N-S-E-W from Reinosa could be in a different geological age. My question is, how you established the geological age Oxfordian-Callovian for that ? " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Robichello Posted February 18, 2017 Author Share Posted February 18, 2017 Hello abyssunder, you are right. the location is close to the North border of Monegro's village, on the North side of the Reinosa swamp. according to the IGME geological map, this region is classified as Dogger. Having a look on the ammonite records from the Oxfordian to the Aalenian, mine looks like similar to the Dogger-Malm transition... Of course, this is my interpretation, I posted the pictures and my hypothesis to be helped in the geological age and ID determination. Link to comment Share on other sites More sharing options...
Ludwigia Posted February 18, 2017 Share Posted February 18, 2017 4 hours ago, Robichello said: Hello abyssunder, you are right. the location is close to the North border of Monegro's village, on the North side of the Reinosa swamp. according to the IGME geological map, this region is classified as Dogger. Having a look on the ammonite records from the Oxfordian to the Aalenian, mine looks like similar to the Dogger-Malm transition... Of course, this is my interpretation, I posted the pictures and my hypothesis to be helped in the geological age and ID determination. That would fit with my interpretation. I was also thinking very early Oxfordian/transition from Callovian. Mariae, cordatum, lamberti zones. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Robichello Posted February 18, 2017 Author Share Posted February 18, 2017 Souds good. Any idea on the Id now? Link to comment Share on other sites More sharing options...
Ludwigia Posted February 18, 2017 Share Posted February 18, 2017 No more than what I already suggested. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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