alej9582 Posted August 30, 2018 Share Posted August 30, 2018 Here is another one I have no clue about. Any thoughts!? Link to comment Share on other sites More sharing options...
Plantguy Posted August 31, 2018 Share Posted August 31, 2018 Might be another bone piece but the pictures are pretty blurry..almost can see some banding that shows up ocassionally in dugong pieces... Here's a bone fragment that I have for comparison... Regards, Chris Link to comment Share on other sites More sharing options...
alej9582 Posted August 31, 2018 Author Share Posted August 31, 2018 Willl get beter photos. Link to comment Share on other sites More sharing options...
alej9582 Posted August 31, 2018 Author Share Posted August 31, 2018 @Plantguy take a look at this ones. Link to comment Share on other sites More sharing options...
Plantguy Posted August 31, 2018 Share Posted August 31, 2018 Dugong bone is crazy dense stuff and so are chert nodules.....hmm maybe still thinking bone but hard to tell...So it appears to have been recently broken. I wonder if I have any that have that fresh break /fracture surface to them along the length of the bone to compare to...let me go look in the garage... Regards, Chris 1 Link to comment Share on other sites More sharing options...
alej9582 Posted August 31, 2018 Author Share Posted August 31, 2018 Just now, Plantguy said: Dugong bone is crazy dense stuff and so are chert nodules.....hmm maybe still thinking bone but hard to tell...So it appears to have been recently broken. I wonder if I have any that have that fresh break /fracture surface to them along the length of the bone to compare to...let me go look in the garage... Regards, Chris Awesome! Really appreciate it. The shape is that of a long (very long) fingernail. It curves down. Link to comment Share on other sites More sharing options...
Plantguy Posted August 31, 2018 Share Posted August 31, 2018 Well, I dont have anything more tonight...Of the easily gotten to pieces in the garage most of them show some boney character/nature which actually surprised me but I know I've seen some in other boxes of bone that dont have the banding/or porous nature or obvious boney textures...If I find something more definitive/illustrative I'll let you know. Regards, Chris Link to comment Share on other sites More sharing options...
alej9582 Posted August 31, 2018 Author Share Posted August 31, 2018 Thank you for your effort as always @Plantguy Link to comment Share on other sites More sharing options...
Max-fossils Posted August 31, 2018 Share Posted August 31, 2018 Dugong bone sure can become whacky. But personally I would lean to this being a concretion rather than bone material. Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
Plantguy Posted September 1, 2018 Share Posted September 1, 2018 (edited) Well, I wave the white flag and will conclude I dont know for sure based on the pics what yours is. I suspect a chert nodule but again that dugong stuff gets mineralized in some weird ways... For whats its worth I couldnt find the dugong specimens I had been looking for but I did find some others that allowed me to try and recreate the fracture pattern I seem to remember Heres a shot of the bone pieces for comparison. I found that some of the bone sections (right side of the photo below) when fractured showed lightly splintered surfaces unlike your unknown. Coloration was a creme/offwhite throughout. There was also this piece (seen on the very left of the 1st photo above) I tried to fracture length wise but it turned out to be very brittle and it broke into many pieces and shows a very prominent shiney conchoidal fracture surfaces similar to the unknown. Interestingly it had a dark black interior with a caramel colored rind and core.. Looks like I've run out of room... Edited September 1, 2018 by Plantguy Changing photo directions 1 Link to comment Share on other sites More sharing options...
Plantguy Posted September 1, 2018 Share Posted September 1, 2018 Here's another piece showing more of the conchoidal chipping I seem to remember and was trying to attribute yours to ..The interesting white spot is an infilled boring clam trace So I've taken this thread off into the ditch so I'll conclude now before I get even more off topic....Have a great day--continued hunting success! Regards, Chris 1 Link to comment Share on other sites More sharing options...
Max-fossils Posted September 1, 2018 Share Posted September 1, 2018 4 hours ago, Plantguy said: There was also this piece (seen on the very left of the 1st photo above) I tried to fracture length wise but it turned out to be very brittle and it broke into many pieces and shows a very prominent shiney conchoidal fracture surfaces similar to the unknown. Interestingly it had a dark black interior with a caramel colored rind and core.. Looks like I've run out of room... 4 This looks a lot like chert/flint to me... What makes you say this is bone? Max Derème "I feel an echo of the lightning each time I find a fossil. [...] That is why I am a hunter: to feel that bolt of lightning every day." - Mary Anning >< Remarkable Creatures, Tracy Chevalier Instagram: @world_of_fossils Link to comment Share on other sites More sharing options...
Plantguy Posted September 1, 2018 Share Posted September 1, 2018 (edited) 47 minutes ago, Max-fossils said: This looks a lot like chert/flint to me... What makes you say this is bone? Good question...Yes it does! I'll get you some more pics of the end and some of the cancellous inner areas. More later. Regards, Chris Edited September 1, 2018 by Plantguy Added comment...both probably silica now.. 1 Link to comment Share on other sites More sharing options...
alej9582 Posted September 1, 2018 Author Share Posted September 1, 2018 Looks like you guys been having some fun! I have chert fragments and what seems to be very similar to the piece I posted it that White chert/flint usually go from lighter to darker color as you move into the center. It was just the shape that got me thinking It could be something else. Alex Link to comment Share on other sites More sharing options...
Plantguy Posted September 2, 2018 Share Posted September 2, 2018 On 9/1/2018 at 2:02 PM, alej9582 said: Looks like you guys been having some fun! I have chert fragments and what seems to be very similar to the piece I posted it that White chert/flint usually go from lighter to darker color as you move into the center. It was just the shape that got me thinking It could be something else. Alex Yep, I wish I could find those other specimens I have..they are somewhere. On 9/1/2018 at 12:10 PM, Max-fossils said: This looks a lot like chert/flint to me... What makes you say this is bone? Here are a few more pics to illustrate the hard to see boney character of my comparative specimen....two small different spongy cancellous areas in the same bone in the upper right of the bone and again in the middle lower left. and a section of the same bone which is brown in color showing more of the layered bone cells around the outside of the specimen in the 2nd photo... Regards, Chris 1 Link to comment Share on other sites More sharing options...
abyssunder Posted September 2, 2018 Share Posted September 2, 2018 Chris's suggestions and images are great. I have no idea of what it could be. It will be good to know the hardness of the specimen in question, to exclude some of the possibilities. I'm wondering, but just wondering, if the scratch marks visible on the external surface can't indicate bioerosion, and / or the specimen can't be coprolite? " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
alej9582 Posted September 2, 2018 Author Share Posted September 2, 2018 9 minutes ago, abyssunder said: Chris's suggestions and images are great. I have no idea of what it could be. It will be good to know the hardness of the specimen in question, to exclude some of the possibilities. I'm wondering, but just wondering, if the scratch marks visible on the external surface can't indicate bioerosion, and / or the specimen can't be coprolite? Prety hard. Interesting idea but it would have to be a chiped off segment of a big pile of... Don see any indicators of plant matter in it though. Link to comment Share on other sites More sharing options...
abyssunder Posted September 2, 2018 Share Posted September 2, 2018 I was inspired by this topic: 2 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
alej9582 Posted September 2, 2018 Author Share Posted September 2, 2018 Very very interesting.!! @abyssunder Link to comment Share on other sites More sharing options...
alej9582 Posted September 8, 2018 Author Share Posted September 8, 2018 @abyssunder @Plantguy @Max-fossils Guys there is one thing we didn’t take into concideration: Ontocetus emmonsi Tusk Fragment. Look at the link below. https://www.floridamuseum.ufl.edu/florida-vertebrate-fossils/species/ontocetus-emmonsi 1 Link to comment Share on other sites More sharing options...
Plantguy Posted September 8, 2018 Share Posted September 8, 2018 I had looked at that thread recently when Jack was looking at one of his recent acquisitions. I agree your find has some bioerosion damage as Lori pointed out and I believe the rounding is abrasion due to being tumbled/transported but if I had to wage a buck on it I'll potentially lose it by sticking with a piece of chert. I should probably wait pending establishing the relative hardness but I throw it out there anyway....a precursor for mud splashing back on my face. LOL. Did you determine the relative hardness as Lori suggested? Chert is pretty hard around 7 on the MOHS scale. Regards, Chris Link to comment Share on other sites More sharing options...
alej9582 Posted September 8, 2018 Author Share Posted September 8, 2018 45 minutes ago, Plantguy said: I had looked at that thread recently when Jack was looking at one of his recent acquisitions. I agree your find has some bioerosion damage as Lori pointed out and I believe the rounding is abrasion due to being tumbled/transported but if I had to wage a buck on it I'll potentially lose it by sticking with a piece of chert. I should probably wait pending establishing the relative hardness but I throw it out there anyway....a precursor for mud splashing back on my face. LOL. Did you determine the relative hardness as Lori suggested? Chert is pretty hard around 7 on the MOHS scale. Regards, Chris Will do as Lori suggested without compromising the piece and grt back to you. Alex 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