tstark Posted January 10, 2017 Share Posted January 10, 2017 The jaw section and teeth are throwing me for a loop. This matrix chunk is from Morocco and I was wanting to id the jaw section and nothing I am looking through has comparable teeth. Please help. Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 10, 2017 Share Posted January 10, 2017 What is the size of the jaw? 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...
tstark Posted January 11, 2017 Author Share Posted January 11, 2017 the jaw is 27mm x 13.6mm. The largest tooth is 4.3mm wide at the base. Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 11, 2017 Share Posted January 11, 2017 Hmm. I'm not real familiar with Moroccan fossil fish. Maybe @oilshale will have some ideas. 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...
fifbrindacier Posted January 11, 2017 Share Posted January 11, 2017 From wich part of Morocco does it come from ? "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
siteseer Posted January 11, 2017 Share Posted January 11, 2017 Assuming the matrix is from the Maastrictian (latest Cretaceous) phosphate, the teeth look similar to those of Saurodon (bony fish). You can try to determine if that fish or a close relative lived during that time. It's known from earlier in the Late Cretaceous (Niobrara Chalk age - Santonian). It's tough to find a Cretaceous bony fish expert when you need one. 1 Link to comment Share on other sites More sharing options...
fifbrindacier Posted January 11, 2017 Share Posted January 11, 2017 Could it be a Cybium jaw ? "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
siteseer Posted January 11, 2017 Share Posted January 11, 2017 1 hour ago, fifbrindacier said: Could it be a Cybium jaw ? From what I've read, specimens that have been identified as Cybium have not been found in rocks older than Early Eocene. However, it is just as likely that the specimen in question came from the Early Eocene phosphates of Morocco. Specimens that have been identified as Cybium, specifically C. proosti (known from the Early Eocene of Virginia and England), have been referred to the genus Acanthocybium. So, yes, this jaw might belong to that fish. Not knowing the layer/age of the rock makes it difficult to determine for sure. 2 Link to comment Share on other sites More sharing options...
fifbrindacier Posted January 11, 2017 Share Posted January 11, 2017 5 minutes ago, siteseer said: From what I've read, specimens that have been identified as Cybium have not been found in rocks older than Early Eocene. However, it is just as likely that the specimen in question came from the Early Eocene phosphates of Morocco. Specimens that have been identified as Cybium, specifically C. proosti (known from the Early Eocene of Virginia and England), have been referred to the genus Acanthocybium. So, yes, this jaw might belong to that fish. Not knowing the layer/age of the rock makes it difficult to determine for sure. Then we just have to wait for what @tstark can tell us about it. "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
tstark Posted January 11, 2017 Author Share Posted January 11, 2017 Sorry for the delay, I started this thread at the end of my day and not expecting so much information so quickly. The pieces are from Khouribga, Morocco. Link to comment Share on other sites More sharing options...
tstark Posted January 11, 2017 Author Share Posted January 11, 2017 All the other material that came with this piece all seem to pieces of Enchodus out of the Phosphate Deposits. Link to comment Share on other sites More sharing options...
fifbrindacier Posted January 12, 2017 Share Posted January 12, 2017 It seems that the phosphates of Khouribga were formed between the later cretaceous (maestrichian) go the ypresian. And, if i'm right the enchodus are from the later cretaceous, just before the great extinction. But if you have pieces of enchodus the chances this one is also from the maestrichian and then from a saurodon are stronger than the chances it comes from the ypresian and so from a cybium. 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
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