Rafel_93 Posted March 5, 2011 Share Posted March 5, 2011 Hello! Well, I only wanted to ask if somebody coul help me with the ID of a few teeth. They all come from Morocco except the one in the last row in the last photo, that is found in Mallorca. I put what I think they can be: First photo: Carcharias hopei and/or Striatolamia macrota Second photo: Spinosaurus (aegyptiacus?), Crocodylus spenceri and Mosasaurus (anceps? beaugiei?) Third photo: Squalicorax pistodontis and Odotus obliquus (Lamna obliqua) Fourth photo: Myliobatis (raouxi?), Enchodus (?) and a fish vertebra (any idea of what fish?) Thanks in advanced!!! Link to comment Share on other sites More sharing options...
Rafel_93 Posted March 5, 2011 Author Share Posted March 5, 2011 Photos three and four... Link to comment Share on other sites More sharing options...
Darwin Ahoy Posted March 5, 2011 Share Posted March 5, 2011 I'd say your ID's are good. As for the vert, how long is it? If it's a good deal shorter than it is wide, it's shark. Link to comment Share on other sites More sharing options...
DeloiVarden Posted March 5, 2011 Share Posted March 5, 2011 Did you find these yourself? I always thought it would be cool to go to morocco with all of the cool Eocene and older fossils readily a available. Link to comment Share on other sites More sharing options...
Rafel_93 Posted March 5, 2011 Author Share Posted March 5, 2011 @Darwin Ahoy: The diameter is 1.3cm, while the heigh is 0.6cm ^^ @DeloiVarden: No, I only found the one in the last row of the first photo. The others are bought to a seller from Morocco Thank you both for answering!! Link to comment Share on other sites More sharing options...
MB Posted March 5, 2011 Share Posted March 5, 2011 Hello! Well, I only wanted to ask if somebody coul help me with the ID of a few teeth. They all come from Morocco except the one in the last row in the last photo, that is found in Mallorca. I put what I think they can be: First photo: Carcharias hopei and/or Striatolamia macrota Second photo: Spinosaurus (aegyptiacus?), Crocodylus spenceri and Mosasaurus (anceps? beaugiei?) Third photo: Squalicorax pistodontis and Odotus obliquus (Lamna obliqua) Fourth photo: Myliobatis (raouxi?), Enchodus (?) and a fish vertebra (any idea of what fish?) Thanks in advanced!!! Hi Rafel I assume that your Mallorca tooth come from the miocene, could be a Carcharias taurus tooth. Regards from the other side http://www.mbfossilcrabs.com/ Link to comment Share on other sites More sharing options...
Rafel_93 Posted March 5, 2011 Author Share Posted March 5, 2011 Hi!! Thaks for helping!! Only one little question: How can I differentiate the teeth from Carcharias hopei, Striatolamia macrota, Carcharias taurus and Odontapsis cuspidata? I've seen images and, for me, all of them are very alike... And yes, I also think it's from the miocene, as I found it in a kind of rock that here we call cantó de marès (a calcareous sandstone). In the same stone I've found another thing that I think that can be from a fish or something, I'll upload it here when it's prepared (I'm cleaning it now). Gràcies!! Link to comment Share on other sites More sharing options...
MB Posted March 6, 2011 Share Posted March 6, 2011 Hi!! Thaks for helping!! Only one little question: How can I differentiate the teeth from Carcharias hopei, Striatolamia macrota, Carcharias taurus and Odontapsis cuspidata? I've seen images and, for me, all of them are very alike... And yes, I also think it's from the miocene, as I found it in a kind of rock that here we call cantó de marès (a calcareous sandstone). In the same stone I've found another thing that I think that can be from a fish or something, I'll upload it here when it's prepared (I'm cleaning it now). Gràcies!! Bon dia For the Morocco samples, I think that tha's a very good reference: http://users.telenet.be/sharkteethcollection/navigatiepagina.htm Anyway, macrota have always striate the lingual side of the crown, and the crown is more plate than in hopei. Don't worry with differences between C.taurus and O.cuspidata, taurus have also the lingual side finely striated and cuspidata not, also, cuspidata is bigger and not so elegant form than taurus. In my Tarragona middle miocene, cuspidata and taurus and ferox are present. Take a look a those ones: http://www.thefossilforum.com/index.php?app=gallery&module=user&user=41&do=view_album&album=27&sort_key=idate&order_key=DESC&prune_key=*&st=25 http://www.mbfossilcrabs.com/ Link to comment Share on other sites More sharing options...
Rafel_93 Posted March 6, 2011 Author Share Posted March 6, 2011 Thanks for helpingg!! Link to comment Share on other sites More sharing options...
Paleoc Posted March 6, 2011 Share Posted March 6, 2011 "Only one little question: How can I differentiate the teeth from Carcharias hopei, Striatolamia macrota, Carcharias taurus and Odontapsis cuspidata? I've seen images and, for me, all of them are very alike..." The first thing to differentiate teeth is the age: Carcharias taurus: Pliocene-recent Carcharias cuspidata (not Odontaspis): Oligocene-Miocene Striatolamia macrota: Eocene Striatolamia striata: Paleocene-Early Eocene Jaekelotodus hopei (not Carcharias): Late Cretaceous-Eocene Example, lets look at Moroccan teeth: The age is going to be somewhere from Cretaceous-Eocene so we can rule out Carcharias taurus and cuspidata since the age doesn't fit. This is why we start with aging the teeth first as it a often a process of elimination. Now lets look at each one of the above species: Carcharias taurus: The modern sand tiger shark. Most of the anterior teeth tend to fairly long and somewhat delicate (teeth from Australian sharks tend to be slightly more robust). They often have fine striations on the lingual (curved inside) side of the blade but sometimes they completely lack striations. They have 1 to 2 small side cusplets. Lateral teeth are shorter, more blade like, usually lack striations and again have small lateral cusplets: http://www.elasmo.com/cunningham/sc_ctaurus.html http://www.elasmo.com/genera/pics/neogene/ds1041c-web.jpg http://www.elasmo.com/genera/pics/neogene/ds1041d-web.jpg http://www.elasmo.com/genera/pics/neogene/ds1048h-web.jpg Carcharias cuspidata: Very similar to Carcharias taurus except the teeth tend to be more robust and usually completely lack striations. http://www.elasmo.com/genera/pics/neogene/ds660-web.jpg Striatolamia: Very similar is structure to Carcharias teeth except they have clear, obvious striations. Lateral teeth have wider more blade like cusplets than Carcharias. Comparing S. macrota and S. striata (other than age), S. macrota teeth are larger and the striations do not extend as far down towards the root and may be almost absent. http://www.elasmo.com/genera/reconstruct/the_recon.html?sp=macrota S. striata http://www.elasmo.com/genera/pics/paleogene/ds790e-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds834e-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds834f-web.jpg S. macrota http://www.elasmo.com/genera/pics/paleogene/ds1123j-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds038-web.jpg Jaekelotus hopei: Very robust teeth which completely lack striations and are usually curved or hook shaped in laterals. http://www.elasmo.com/genera/pics/paleogene/ds19-20x_lAnt-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds17-18x_uLat-web.jpg Link to comment Share on other sites More sharing options...
MB Posted March 6, 2011 Share Posted March 6, 2011 (edited) "Only one little question: How can I differentiate the teeth from Carcharias hopei, Striatolamia macrota, Carcharias taurus and Odontapsis cuspidata? I've seen images and, for me, all of them are very alike..." The first thing to differentiate teeth is the age: Carcharias taurus: Pliocene-recent Carcharias cuspidata (not Odontaspis): Oligocene-Miocene Striatolamia macrota: Eocene Striatolamia striata: Paleocene-Early Eocene Jaekelotodus hopei (not Carcharias): Late Cretaceous-Eocene Example, lets look at Moroccan teeth: The age is going to be somewhere from Cretaceous-Eocene so we can rule out Carcharias taurus and cuspidata since the age doesn't fit. This is why we start with aging the teeth first as it a often a process of elimination. Now lets look at each one of the above species: Carcharias taurus: The modern sand tiger shark. Most of the anterior teeth tend to fairly long and somewhat delicate (teeth from Australian sharks tend to be slightly more robust). They often have fine striations on the lingual (curved inside) side of the blade but sometimes they completely lack striations. They have 1 to 2 small side cusplets. Lateral teeth are shorter, more blade like, usually lack striations and again have small lateral cusplets: http://www.elasmo.com/cunningham/sc_ctaurus.html http://www.elasmo.com/genera/pics/neogene/ds1041c-web.jpg http://www.elasmo.com/genera/pics/neogene/ds1041d-web.jpg http://www.elasmo.com/genera/pics/neogene/ds1048h-web.jpg Carcharias cuspidata: Very similar to Carcharias taurus except the teeth tend to be more robust and usually completely lack striations. http://www.elasmo.com/genera/pics/neogene/ds660-web.jpg Striatolamia: Very similar is structure to Carcharias teeth except they have clear, obvious striations. Lateral teeth have wider more blade like cusplets than Carcharias. Comparing S. macrota and S. striata (other than age), S. macrota teeth are larger and the striations do not extend as far down towards the root and may be almost absent. http://www.elasmo.com/genera/reconstruct/the_recon.html?sp=macrota S. striata http://www.elasmo.com/genera/pics/paleogene/ds790e-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds834e-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds834f-web.jpg S. macrota http://www.elasmo.com/genera/pics/paleogene/ds1123j-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds038-web.jpg Jaekelotus hopei: Very robust teeth which completely lack striations and are usually curved or hook shaped in laterals. http://www.elasmo.com/genera/pics/paleogene/ds19-20x_lAnt-web.jpg http://www.elasmo.com/genera/pics/paleogene/ds17-18x_uLat-web.jpg Nice explanation paleoc... but I'm not completely agree with you in the age concept. I'm not so hard now with the fossil shark tooth, but in the case of C. taurus, I can asure you that you can find it in the middle miocene, Languian and Serravallian, at least here. No deep works about my local fauna, but I've sets of extant C.taurus, and I can asure you that there are not any difference with the fossils we find. I see that here coexists three Carcharias and Odontaspis forms, the cuspidata, taurus (before acutissima) and ferox. Just my point. Edited March 7, 2011 by MB http://www.mbfossilcrabs.com/ Link to comment Share on other sites More sharing options...
Rafel_93 Posted March 7, 2011 Author Share Posted March 7, 2011 Thanks for the explanations!! When I have time I'll check the teeth I have and try to identificate them. Thanks!! Link to comment Share on other sites More sharing options...
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