drbush Posted December 21, 2020 Share Posted December 21, 2020 Hi friends and happy holidays ,can you help me with this ,I went to Marrat formation area (toarcian) to the west of Riyadh and found many ammonites ,they are small , thin , 6-10 cm wide and 4-5 cm high , it was a surface find . What sp. could they be? 7 Link to comment Share on other sites More sharing options...
Mahnmut Posted December 21, 2020 Share Posted December 21, 2020 Hello drbush, I am sorry i can not tell you anything about the species, but the way the structure weathered out in this one is beautiful and something I have not seen before. Try to learn something about everything and everything about something Thomas Henry Huxley Link to comment Share on other sites More sharing options...
FranzBernhard Posted December 21, 2020 Share Posted December 21, 2020 Very nice, indeed! Thanks for sharing! Guess there is some kind of wind abrasion involved in them? But sorry, can also not ID them... Franz Bernhard Link to comment Share on other sites More sharing options...
Ludwigia Posted December 21, 2020 Share Posted December 21, 2020 I'm also not certain which sp. you have there, but according to the various suture lines, you have at least 2 different ones. I would suggest making comparisons with the ammonite fauna from concurring stratigraphy in other parts of the world. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted December 21, 2020 Share Posted December 21, 2020 I don't know which ones are which, but the Marrat Fm. is divided into three informal units; the lower one having the ammonites Bouleiceras elegans and Protogrammoceras madagascariensnear near the top, the middle unit being barren and the upper unit containing Hildaites sanderi, Nejdia bramkampi and Nejdia furnishi.. 8 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
drbush Posted December 21, 2020 Author Share Posted December 21, 2020 It could be Nejdia bramkampi Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted December 22, 2020 Share Posted December 22, 2020 7 hours ago, drbush said: It could be Nejdia bramkampi I dunno. Yours are actually better preserved than the specimens I have seen in the literature for this location! Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
drbush Posted December 27, 2020 Author Share Posted December 27, 2020 I found more than 10 but they look the same, may be one day i know the different species. 3 Link to comment Share on other sites More sharing options...
thelivingdead531 Posted December 27, 2020 Share Posted December 27, 2020 I can’t provide any insight, but I just wanted to say they are beautiful! Link to comment Share on other sites More sharing options...
drbush Posted December 29, 2020 Author Share Posted December 29, 2020 Link to comment Share on other sites More sharing options...
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