Gatorman Posted December 31, 2007 Share Posted December 31, 2007 I have this one labeled as Carcharhinus leucas am I right or is it Carcharhinus obscurus? Link to comment Share on other sites More sharing options...
greel Posted January 1, 2008 Share Posted January 1, 2008 I'm also very interested if anyone can offer insight into distinguishing the differences between the teeth of the bull and dusky sharks. I've heard it is rather difficult. Does tooth size play a factor at all? Is it the shape of the blade or root? I've read that the bull shark tooth is more common than the dusky in Florida, but here in North Carolina the reverse is true. -greel Link to comment Share on other sites More sharing options...
Northern Sharks Posted January 2, 2008 Share Posted January 2, 2008 I'm also very interested if anyone can offer insight into distinguishing the differences between the teeth of the bull and dusky sharks. I've heardit is rather difficult. Does tooth size play a factor at all? Is it the shape of the blade or root? I've read that the bull shark tooth is more common than the dusky in Florida, but here in North Carolina the reverse is true. -greel Bulls will get larger than Duskys, but not by much and since the size of the shark isn't known, that isn't a reliable ID method. From elasmo.com, Dusky's have a strong nutrient groove with the foramina (hole) at or above the thickest part of the root. They have a curved distal edge and the serrations are coarser and more irregular than on Bulls. Bull sharks have a weaker groove with the foramina below the thickest part of the root and both sides of the blade look to be "pinched" in. Lower teeth are a different story. They are much harder to tell apart. Anson, yours is a Bull. 1 There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Gatorman Posted January 2, 2008 Author Share Posted January 2, 2008 Thanks Link to comment Share on other sites More sharing options...
greel Posted January 2, 2008 Share Posted January 2, 2008 Bulls will get larger than Duskys, but not by much and since the size of the shark isn't known, that isn't a reliable ID method. From elasmo.com, Dusky's have a strong nutrient groove with the foramina (hole) at or above the thickest part of the root. They have a curved distal edge and the serrations are coarser and more irregular than on Bulls. Bull sharks have a weaker groove with the foramina below the thickest part of the root and both sides of the blade look to be "pinched" in. Lower teeth are a different story. They are much harder to tell apart. Anson, yours is a Bull. Thanks Northern Sharks for the explanation. I had a tooth on my flickr page that I suspected was a bull shark tooth, mainly due to it's size ( 1 inch). From the side by side photo and your explanation, I now firmly believe it to be a dusky. Anson that is just a killer tooth you have! -greel Link to comment Share on other sites More sharing options...
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