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Showing results for tags 'cabezon'.
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Going through some scapanorhynchus teeth to photograph for a museum bulletin I'm working on, I came across this tooth. It is different in that there seems to be at least one striation on the labial face. The striations on the lingual face are pretty distinct, but seem to be worn (depositional wear?). Could the labial striation also be depositional wear? But the really odd thing is the pair of cusplets. Scapanorhynchus raphiodon and Scapanorhynchus puercoensis are both found within 25 miles of this site, but the cusplets on these species are smaller in relation to the main cusp, and are more pointed. In Bourdon's NMMNHS Bulletin 52, there is a photo of S. sp. cf. tenuis (Figure 15, image I bottom left) that shows a tooth with two accessory cusplets on either side of the main cusp. However there is not a noticeable gap between the two cusplets found on either side of the main cusp. Could this tooth simply be pathological, or might I have missed the species entirely? Thanks for your help!
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- new mexico
- coniacian
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Hey all! Still working on the Cabezon fauna, which looks to be never ending! I have, so far, over 16,000 fossils (mostly selachian teeth) recovered from ant hills. I just went out yesterday and got another 100 pounds of ant hill to go through. Although most of the teeth are scapanorhynchus and cretolamna, there are several other species represented, including some very small orectolobids. I also run across a few that I have not seen in the literature or in other museum collections, so I am going to post a few this week to pick your brains. The first one could be a symphysial of something, but the labial face is different than anything I have seen. The cusp is almost in bas relief to the root. This is not a result of weathering, as the enamel of the cusp turns inward at the base before it reaches the root.On the lingual face, the root is more pronounced (in the picture of the labial face, you can see the root reach up to half the crown size). Any ideas? And this is just the first of a few I will post. I have three photos, so there will be three posts of them. Thanks! Randy
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I found these today northwest of albuquerque. They were near an area small shark teeth can be found. I have no idea what it is. They were near each other with other pieces, broken up. So I believe they are pieces from the same creature. I will try to post more pics later.
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Moving on to another species. Any ideas as to what this might be? I have six in the collection from the Cabezon fauna. This is the only complete one (with all of the root). I will send four pictures . Thanks! Randy
- 4 replies
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- rhynobatos
- orecolobiformes
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