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Showing results for tags 'parasymphyseal'.
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Symphyseal/Parasymphyseal Otodus obliquus Teeth from Morocco
MarcoSr posted a topic in Member Collections
I rarely buy shark teeth, but I saw a lot (see below picture) of small shark teeth from Morocco for sale on FB. I could see a good number of Otodus obliquus symphyseal teeth in the pictures of the lot, and one tooth that looked like an Otodus obliquus lower parasymphyseal tooth. Lower Otodus obliquus parasymphyseal teeth are much rarer than the symphyseal teeth. Per a personal conversation with Lutz Andres, based upon his research Otodus obliquus symphyseal teeth are probably 10 times more common than the lower parasymphyseal teeth. The opposite is true for Parotodus. I bought the lot and just received the teeth. I sent pictures to Lutz of a good number of the teeth, and we agreed that there were 16 symphyseal teeth and one parasymphyseal tooth in the lot. It can be very difficult to differentiate Moroccan Otodus from Parotodus teeth, and only large size can confidently rule out Parotodus teeth. However, in the Moroccan Khouribga faunas, Otodus obliquus are much more common than Parotodus. Group picture of the lot of teeth: Two symphyseal teeth: Symphyseal Otodus obliquus tooth, Khouribga, Morocco 21 mm SH Symphyseal Otodus obliquus or Parotodus tooth, Khouribga, Morocco 10 mm SH Parasymphyseal tooth: Parasymphyseal Otodus obliquus or Parotodus tooth, Khouribga, Morocco13 mm SH Marco Sr.- 2 replies
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Moroccan Parotodus parasymphyseal and Cretolamna biauriculata?
ThePhysicist posted a topic in Fossil ID
Hi y'all, I picked these shark teeth up from a local rock shop. The first is definitely a symphyseal/parasymphyseal tooth but I'm not sure if it's from an Eocene Parotodus or Otodus. I lean towards Parotodus because of the narrow crown and its significant curvature. The second I think is a Cretolamna biauriculata. The symphyseal is about an inch ~ 2 cm in length. @siteseer@Al Dente@MarcoSr@Untitled Parotodus sp.?: Cretolamna biauriculata?:- 4 replies
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I found this perfect little tooth today along the Potomac River in Maryland (Paleocene, Aquia Formation), which I think may be an Otodus obliquus parasymphyseal. The root isn't as oversized as megatooth shark parasymphyseals I've seen posted elsewhere on the forum, but it sure looks like an Otodus, is laterally compressed, and is quite tiny compared to other Otodus I've found. @MarcoSr, @siteseer, @Al Dente, and others, what do you think? This tooth bears similarities to another I found from this location several weeks ago (tooth on the right below).
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- paleocene
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From the album: Cenomanian Shark Teeth and other Marine Fauna, Ryazan Oblast, Russia
Dwardius woodwardi (Siverson 1999) parasymphyseal tooth. Slant length indicated by longest side.- 1 comment
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From the album: Shark teeth and associated fossils from Antwerp, Belgium
© Graulus Charlotte
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From the album: Shark teeth and associated fossils from Antwerp, Belgium
© Graulus Charlotte
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From the album: Shark teeth and associated fossils from Antwerp, Belgium
© Graulus Charlotte
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From the album: Shark teeth and associated fossils from Antwerp, Belgium
One of the rarer teeth in my personal collection. This is a parasymphyseal Parotodus Benedeni. I knew I struck gold when I pocket this one out of my sifter Found in Antwerp, Belgium© Graulus Charlotte
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A nice upper parasymphyseal cow shark
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This little Ric was self collected in a quarry in Onslow County N.C. It has been I.D.'d as a parasymphyseal by Marco here on the forum.
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