siteseer Posted September 29, 2010 Share Posted September 29, 2010 I was just re-reading a rather recent article on deformed shark teeth (Becker, Chamberlain, Jr., and Stoffer, 2000). The authors examined hundreds of teeth from four Cretaceous localities (Big Brook, NJ; Cape Fear River, NC; Hannahatchee Creek, GA; Trussels Creek, AL) and concluded that the frequency of occurrence varies between 0.015% in Squalicorax kaupi teeth and 0.36% in Paranomotodon sp. The authors also looked at modern lamniform shark and carcharhiniform shark teeth and got results in the same ballpark. This thread deserves a bump in any case. Becker, M.A, J.A. Chamberlain Jr., and P.W. Stoffer. 2000. Pathologic tooth deformities in modern and fossil chondrichthians: a consequence of feeding-related injury. Lethaia 33: 103-118. Yes, it is nice I can only speak for my personal experience on how rare pathological teeth are. I'd like to know what everyone else thinks the frequency is for finding pathological teeth. 1 Link to comment Share on other sites More sharing options...
siteseer Posted September 29, 2010 Share Posted September 29, 2010 Wear facets on shark teeth are unusual since they are generally not in the jaw long enough to develop a worn tip to that degree. I have one or two Ptychodus like that and have even seen two Parotodus teeth with wear facets at the tip. Ptychodus teeth with wear facets. Link to comment Share on other sites More sharing options...
Tony Eaton Posted October 16, 2010 Share Posted October 16, 2010 Thanks, that is interesting siteseer. P. whipplei here in N. Texas seem to have the wear facets often at least from what I find, but I think rare for other P. species. It can be frustrating actually when you think you've found a "perfect" tooth and find the tip of the crown is broken off, although the wear facets add scientific value. Link to comment Share on other sites More sharing options...
Bill Posted February 11, 2011 Share Posted February 11, 2011 Unfortunately it has a broken root, but here's a patho' Striatolamia macrota. Found yesterday in the Abbey Wood shell bed material, I collected in Oct 2010. Tip to tip = 2cm. 1 KOF, Bill. Welcome to the forum, all new members www.ukfossils check it out. Link to comment Share on other sites More sharing options...
Paleoc Posted February 11, 2011 Share Posted February 11, 2011 (edited) Wear facets on shark teeth are unusual since they are generally not in the jaw long enough to develop a worn tip to that degree. I have one or two Ptychodus like that and have even seen two Parotodus teeth with wear facets at the tip. The last two on the right have compression damage. It happens when it bit into something very hard (could even be the opposing tooth) and punched the tip of the tooth inside. Edited February 11, 2011 by Paleoc Link to comment Share on other sites More sharing options...
Paleoc Posted February 11, 2011 Share Posted February 11, 2011 Small whale vertebra with severe pathologic growth (arthritic?). It was found (dug out) with the small meg touching it. The serrations were mostly ripped off one side of the meg and the meg fits perfectly into a cut on the bone. Link to comment Share on other sites More sharing options...
njcreekhunter Posted February 12, 2011 Share Posted February 12, 2011 (edited) A rare 2.5 inch pathological chub that I found in New Jersey. Edited February 12, 2011 by sharktoothboy Link to comment Share on other sites More sharing options...
erik m Posted February 12, 2011 Share Posted February 12, 2011 Here is also a cool Bone Valley tooth that has a nice pathologie. Greetings Erik 1 Link to comment Share on other sites More sharing options...
erik m Posted February 12, 2011 Share Posted February 12, 2011 Here is also a cool Bone Valley tooth that has a nice pathologie. Greetings Erik A vew more. Link to comment Share on other sites More sharing options...
erik m Posted February 12, 2011 Share Posted February 12, 2011 Great Topic My almost 90° Cretaceous NC shark tooth I did also find a tooth that looks a bid like that togther with this one. Greetings Erik 1 Link to comment Share on other sites More sharing options...
Darwin Ahoy Posted February 13, 2011 Share Posted February 13, 2011 Not much compared to some of these pathologies, but here's a wrinkly pristidontis, Cretaceous, from Monmouth County, NJ Link to comment Share on other sites More sharing options...
Auspex Posted July 1, 2011 Share Posted July 1, 2011 Time to resurrect this thread, because I just secured for my collection a rare pathology. You just don't see broken-and-healed bird wing bones, because 99.9999% of the time the victim does not survive very long. This is an ulna (the mid-wing long bone to which the secondary flight feathers attach. I think it is from a Pied-billed Grebe; it is a Pleistocene Florida river find from Dixie County. A shout-out to Nate (Prehistoric Florida)! 1 "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...
Roz Posted July 1, 2011 Share Posted July 1, 2011 Very cool, Auspex. That's the first I have seen! And eric m.. love that last twisted in growth tooth.... Welcome to the forum! Link to comment Share on other sites More sharing options...
bmorefossil Posted July 2, 2011 Share Posted July 2, 2011 a few of my pathologies Link to comment Share on other sites More sharing options...
siteseer Posted July 7, 2011 Share Posted July 7, 2011 Here is a pathologic Squalicorax pristodontus from the Late Cretaceous (Maastrichtian) of the Ouled Abdoun Basin, Morocco. Link to comment Share on other sites More sharing options...
lordpiney Posted July 7, 2011 Share Posted July 7, 2011 here's my only patho tooth... a monmouth county goblin tooth. Link to comment Share on other sites More sharing options...
siteseer Posted January 4, 2013 Share Posted January 4, 2013 (edited) I thought I would bump this great thread. Here is a very beat-up megalodon from the Sharktooth Hill Bonebed that has an unusually thick crown with signs of some weird compression during its development. It also bears a wear facet which tells me it was either in the jaw longer than normal or perhaps it is just postmortem wear at the tip. The tooth appears to have been sheared off either by biting action of its owner, biting action of another shark, or maybe just by a large sharp object cutting through it during compaction of the sediment by overlying sediments. Yeah, it's ugly but also interesting. Edited January 4, 2013 by siteseer Link to comment Share on other sites More sharing options...
32fordboy Posted January 4, 2013 Share Posted January 4, 2013 Oh, wow, I forgot about this awesome thread. Here are a few oddities: 1. Mammoth jaw (Siberia) with some sort of growth on the front. Some elephant jaws have a protuberance there naturally, but this thing is differently-shaped and off to one side. Maybe a tumor or healed damage? 2. Cro-magnon jaw with a tooth infection (the alveolus has been "dished" out). 3. Juvenile Jaguar jaw (Florida). The improperly-erupted p4 has been called a "pathology". Not sure if it qualifies, but it's neat. 1 www.nicksfossils.com Link to comment Share on other sites More sharing options...
Harry Pristis Posted January 5, 2013 Author Share Posted January 5, 2013 Here are some pathologies that probably resulted from really awful infections: 1 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
Al Dente Posted January 5, 2013 Share Posted January 5, 2013 Siteseer's recent post of the deformed and bitten meg reminded me of a similar tooth that I have. This is a deformed Yorktown Formation megalodon that has been bitten cleanly off the root. 1 Link to comment Share on other sites More sharing options...
RichW9090 Posted January 8, 2013 Share Posted January 8, 2013 Nate, the 'dished' out appearence of your Cromagnon is the crypt of a large abcess - and it looks like there is another abcess under the tooth anterior to it. 1 The plural of "anecdote" is not "evidence". Link to comment Share on other sites More sharing options...
32fordboy Posted January 8, 2013 Share Posted January 8, 2013 Oh, indeed. I'll have to get some better pics of it, one of these days. Can you imagine having such a problem without modern dentistry? It could truely be a life-threatening problem if the pain was severe enough to limit eating. We have it so good. Nick www.nicksfossils.com Link to comment Share on other sites More sharing options...
Scylla Posted January 8, 2013 Share Posted January 8, 2013 Oh, indeed. I'll have to get some better pics of it, one of these days. Can you imagine having such a problem without modern dentistry? It could truely be a life-threatening problem if the pain was severe enough to limit eating. We have it so good. Nick Dental infections could kill much faster than just starving you out. Without antibiotics that type of infection could be rapidly fatal due to sepsis. 1 Link to comment Share on other sites More sharing options...
jpc Posted January 8, 2013 Share Posted January 8, 2013 sepsis or starvation... ouch. Link to comment Share on other sites More sharing options...
Harry Pristis Posted February 12, 2013 Author Share Posted February 12, 2013 (edited) I finally got around to photographing this basicranium (the rear of the skull) of a good-size alligator. I am still astonished that the 'gator lived with this abscess long enough to produce this chunk of bone. images copyright Harry Pristis 2013 Edited February 15, 2013 by Harry Pristis 1 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now