Darrell Barnes Posted September 2, 2019 Share Posted September 2, 2019 Here is a video I made, measuring the cusp of a Scapanorhynchus fossil shark tooth from Frankstown, MS. I used the technique suggested by a previous post regarding the measurement of the tooth cusp of "Carcharocles, Carcharodon and Isurus using anterior teeth." Does the technique and measurement I performed appear legitimate? fossil shark tooth | measuring in inches in centimeters Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 2, 2019 Share Posted September 2, 2019 Here is a TFF post that mentions “crown height” which is what you are measuring. Is crown height the same as your cusp height? http://www.thefossilforum.com/index.php?/topic/94335-measuring-length-of-a-tooth/ Here is how sellers of Megalodon teeth measure slant height: https://www.darkwatermegs.com/megalodon-teeth-information/how-big-is-my-megalodon-tooth/how-to-measure-a-shark-tooth.html Megalodon crown height: https://www.fossilguy.com/topics/megsize/megsize.htm 3 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Darrell Barnes Posted September 2, 2019 Author Share Posted September 2, 2019 (edited) Thank you for your prompt response! Crown height is what I am measuring. I haven't been "swimming" long enough in the learned fossil community to know the appropriate lingo. From the links you posted, slant height would certainly get me a much larger tooth dimension. It also appears the standard of measurement in the commercial market....much easier to accomplish than the perpendicular line method I used. The problem I face with Scapanorhynchus is that the top row of teeth might fit the slant height measurement nicely (since their appearance in shape is similar to Megalodon, though smaller), but the bottom row of teeth have impressive roots that are quite extensive. I like the crown height measurement I used, because it seems blatantly honest. It may not matter the method used, just so one specifies. Edited September 2, 2019 by Darrell Barnes 1 Link to comment Share on other sites More sharing options...
Darrell Barnes Posted September 2, 2019 Author Share Posted September 2, 2019 (edited) shark length calculation | dimensional analysis The main element of my pursuit is measurement of the crown height for purposes of calculating the length of the shark. Edited September 2, 2019 by Darrell Barnes 1 Link to comment Share on other sites More sharing options...
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