Archie Posted May 9, 2018 Share Posted May 9, 2018 I had a hunt for some shark teeth the other day in the Lower Carboniferous/Mississippian of Scotland and found an interesting Petalodont I havent been able to identify, its very similar in shape to Petalodus acuminatus but has no imbricated basal ridge between the crown and the base and the ornamentation on the crown is also very different from P. acuminatus. Any thoughts on what it could be would be greatly appreciated! 3 Link to comment Share on other sites More sharing options...
Innocentx Posted May 9, 2018 Share Posted May 9, 2018 Very nice tooth, and definitely petalodus. Wish I could help with further ID. I see what you're saying about the lack of imbrication and the striations on crown surface. Hope someone here can help. Good luck! 2 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 9, 2018 Share Posted May 9, 2018 Cant help with ID, Sam, but that tooth is fantastic! @JimB88 @thair @TNCollector @TqB Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Andy B Posted May 9, 2018 Share Posted May 9, 2018 Agreed! Very nice find!! Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 9, 2018 Share Posted May 9, 2018 Lovely tooth! Good find! Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Miocene_Mason Posted May 9, 2018 Share Posted May 9, 2018 Awesome tooth! “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
Auspex Posted May 9, 2018 Share Posted May 9, 2018 This is a stunning specimen. Even the matrix is attractive! "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Archie Posted May 9, 2018 Author Share Posted May 9, 2018 Thanks very much guys! Link to comment Share on other sites More sharing options...
TqB Posted May 9, 2018 Share Posted May 9, 2018 A beauty, Sam (and I can't help with the ID, I usually ask you about Carb teeth. ) Tarquin Link to comment Share on other sites More sharing options...
Archie Posted May 13, 2018 Author Share Posted May 13, 2018 Thanks Tarquin Link to comment Share on other sites More sharing options...
TNCollector Posted May 13, 2018 Share Posted May 13, 2018 The ornamentation you see on the crown is actually the result of erosion of the outside layer of enamel. In life, it would have been smooth. I see two possibilities here, either it is Petalodus acuminatus that has been weathered, or it is Petalodus linguifer. The geological survey of Illinois presents a P. linguifer tooth and it looks identical to yours. Unfortunately P. linguifer has not been updated since the mid-19th century. 3 Link to comment Share on other sites More sharing options...
fossilselachian Posted May 13, 2018 Share Posted May 13, 2018 Here is another Petalodont from Scotland. The info which came with the tooth was as follows: Lower Carbonlferous Upper Visean Brigantian Stage Trearne Quarry Beith, Strathcyde Scotland the tooth was not identified to species. That's all I know about the tooth which is presented here for comparison purposes. 3 Link to comment Share on other sites More sharing options...
Archie Posted October 31, 2018 Author Share Posted October 31, 2018 On 5/13/2018 at 4:36 PM, TNCollector said: The ornamentation you see on the crown is actually the result of erosion of the outside layer of enamel. In life, it would have been smooth. I see two possibilities here, either it is Petalodus acuminatus that has been weathered, or it is Petalodus linguifer. The geological survey of Illinois presents a P. linguifer tooth and it looks identical to yours. Unfortunately P. linguifer has not been updated since the mid-19th century. Thanks Jim! Sorry I only just noticed your post, I'll have a look at P. linguifer! I dont think its an eroded P. acuminatus just because Ive found them without the enamel on the crown before and they looked very different to this, I also split it out and there is nothing left in the negative. Although it could have been eroded pre-fossilization it seems unlikely as the edges of the root are paper thin. On 5/13/2018 at 5:16 PM, fossilselachian said: Here is another Petalodont from Scotland. The info which came with the tooth was as follows: Lower Carbonlferous Upper Visean Brigantian Stage Trearne Quarry Beith, Strathcyde Scotland the tooth was not identified to species. That's all I know about the tooth which is presented here for comparison purposes. That's a really beautiful example of a Petalodus acuminatus anterior tooth! Trearne is one of my fave sites Link to comment Share on other sites More sharing options...
Innocentx Posted November 1, 2018 Share Posted November 1, 2018 @Archie I have a lower Permian petalodont tooth similar to yours, though in chert. Would you like to see? 2 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Carl Posted November 1, 2018 Share Posted November 1, 2018 @Archie... Your fossils KILL me... Link to comment Share on other sites More sharing options...
Archie Posted November 1, 2018 Author Share Posted November 1, 2018 @Innocentx I would love to see it!! Thanks @Carl 1 Link to comment Share on other sites More sharing options...
Innocentx Posted November 1, 2018 Share Posted November 1, 2018 Lower Permian Kansas. 3 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Archie Posted November 1, 2018 Author Share Posted November 1, 2018 That's exceedingly beautiful! Thanks for showing! Your tooth appears to be showing the lingual side and my tooth is labial side up but they do look similar and some petalodonts do only have the imbrications on the lingual side. I'm meeting some staff members at the National Museum of Scotland soon to have a look through the collection so I'll see f there are any others like it! 1 Link to comment Share on other sites More sharing options...
Innocentx Posted November 1, 2018 Share Posted November 1, 2018 I would have thought mine was labial side. It is slightly convex towards observer. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
ynot Posted November 2, 2018 Share Posted November 2, 2018 @Innocentx @Carl Your tags will not work if You do not select the user name from the drop down menu when using the @(member) tag. You will know it worked when the @(user name) is highlighted. Regards, Tony 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Archie Posted November 2, 2018 Author Share Posted November 2, 2018 2 hours ago, Innocentx said: I would have thought mine was labial side. It is slightly convex towards observer. I thought it was the lingual side as basal ridge is much wider than it would normally be on the labial side, is your tooth still all there or is it an impression with the original tooth dissolved away? If it was that would explain why it is convex rather than concave. Link to comment Share on other sites More sharing options...
Archie Posted November 2, 2018 Author Share Posted November 2, 2018 22 minutes ago, ynot said: @Innocentx @Carl Your tags will not work if You do not select the user name from the drop down menu when using the @(member) tag. You will know it worked when the @(user name) is highlighted. Regards, Tony Thanks Tony! Link to comment Share on other sites More sharing options...
Innocentx Posted November 2, 2018 Share Posted November 2, 2018 47 minutes ago, Archie said: is your tooth still all there or is it an impression with the original tooth dissolved away It's hard to tell with this tooth in chert but I think it's all there. 1 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
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