Krystal Posted January 19, 2019 Share Posted January 19, 2019 Hi all, I'm relatively new to this forum and have been fossil hunting for a few seasons. I'm certain I've run into a few of you in the NJ brooks, since some have mentioned checking out this forum :). I'm hoping to be more active on this forum! A few months ago I found this fossilized bone on a gravel bank. Based on the concave end, I can only surmise that it is a distal femur or acetabulum. Thanks for any and all input! Krystal 1 Link to comment Share on other sites More sharing options...
Innocentx Posted January 19, 2019 Share Posted January 19, 2019 Wish I could help, but lack the knowledge. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Paleoworld-101 Posted January 20, 2019 Share Posted January 20, 2019 Are you sure it is Cretaceous? The preservation looks more recent, i would guess mammalian (admittedly i am not very familiar with the fossil bones from this site). But i would agree with pelvic acetabulum. "In Africa, one can't help becoming caught up in the spine-chilling excitement of the hunt. Perhaps, it has something to do with a memory of a time gone by, when we were the prey, and our nights were filled with darkness..." -Eternal Enemies: Lions And Hyenas Link to comment Share on other sites More sharing options...
Krystal Posted January 20, 2019 Author Share Posted January 20, 2019 (edited) @Paleoworld-101 Good point and observation, I have no evidence for Cretaceous/reptilian! It could certainly be a more recent time period (I updated the title as such). Edited January 20, 2019 by Krystal 1 Link to comment Share on other sites More sharing options...
The Jersey Devil Posted January 20, 2019 Share Posted January 20, 2019 It is a piece of slag. “You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal Link to comment Share on other sites More sharing options...
Paleoworld-101 Posted January 20, 2019 Share Posted January 20, 2019 38 minutes ago, The Jersey Devil said: It is a piece of slag. Slag? Bone texture is clearly present in the last picture. 1 "In Africa, one can't help becoming caught up in the spine-chilling excitement of the hunt. Perhaps, it has something to do with a memory of a time gone by, when we were the prey, and our nights were filled with darkness..." -Eternal Enemies: Lions And Hyenas Link to comment Share on other sites More sharing options...
ynot Posted January 20, 2019 Share Posted January 20, 2019 52 minutes ago, The Jersey Devil said: It is a piece of slag. Does not look like any slag I have seen. Agree with it looking like a bone. Maybe @Harry Pristis can help. 2 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...
The Jersey Devil Posted January 20, 2019 Share Posted January 20, 2019 10 hours ago, Paleoworld-101 said: Slag? Bone texture is clearly present in the last picture. 10 hours ago, ynot said: Does not look like any slag I have seen. Agree with it looking like a bone. Maybe @Harry Pristis can help. I am 100% sure it’s a concretion/slag. The other pictures show no sign of bone structure and the last pic is very uneven in terms of “structure.” It also doesn’t have the right shape. Even if it was a bone it would have to be modern. 1 “You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal Link to comment Share on other sites More sharing options...
Petebeh Posted January 20, 2019 Share Posted January 20, 2019 If I had to guess, I'd say it looks like a piece of a turtle pelvis that includes the acetabulum and posterior iliac process. I agree with Paleoworld that it looks more recent than the Cretaceous. Link to comment Share on other sites More sharing options...
Paleoworld-101 Posted January 20, 2019 Share Posted January 20, 2019 2 hours ago, The Jersey Devil said: I am 100% sure it’s a concretion/slag. The other pictures show no sign of bone structure and the last pic is very uneven in terms of “structure.” It also doesn’t have the right shape. In addition to the last picture, i can also see bone texture on another edge from the opposite side. 1 "In Africa, one can't help becoming caught up in the spine-chilling excitement of the hunt. Perhaps, it has something to do with a memory of a time gone by, when we were the prey, and our nights were filled with darkness..." -Eternal Enemies: Lions And Hyenas Link to comment Share on other sites More sharing options...
Pemphix Posted January 20, 2019 Share Posted January 20, 2019 No slag, definitely bone IMO. I tend to more recent - or maybe pleistocene - like Petebeh said, too. Link to comment Share on other sites More sharing options...
Trevor Posted January 20, 2019 Share Posted January 20, 2019 That's bone. I would like to say its reptile but I cannot tell. The bone looks similar in texture to some of my finds. Can you take some really close up pictures of the texture? Right now I cannot tell if the bone is Pleistocene or Cretaceous, but I think it is a phalanx bone from some species of mosasaur. Either way, nice find. @non-remanié 1 : ) Link to comment Share on other sites More sharing options...
Krystal Posted January 20, 2019 Author Share Posted January 20, 2019 (edited) Hi all, Wow, thanks so much for all of your thoughts. Here are a few zoomed in images, to the best of my ability. I also believe it shows bone texture. There is a lot of matrix strongly attached to it, which makes it difficult to show much of the texture. I originally suspected an acetabulum and anterior superior iliac spine, but the orientation of the possible acetabulum nodule (divot in the concave impression) relative to the rest of it throws me off. Also, it is very three dimensional, and I expected this part of a pelvic girdle to be a little flatter. At the same time, I have nothing in-hand to compare this to, so a pelvis may just as well be like this. Phalanx is also an interesting possibility that I will have to look into. Edited January 20, 2019 by Krystal 1 Link to comment Share on other sites More sharing options...
Innocentx Posted January 20, 2019 Share Posted January 20, 2019 @Krystal. Great photos! Sooooo not slag. 1 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Plax Posted January 22, 2019 Share Posted January 22, 2019 color may be throwing off judgement towards recent but there are weathered cretaceous sections with this bone color. I can't think of a recent or fossil mammal bone with so little porous center and so much solid exterior bone. This is just a judgment call and am not 100% sure of anything. 2 Link to comment Share on other sites More sharing options...
erose Posted January 22, 2019 Share Posted January 22, 2019 My first guess would be recent or Pleistocene in age. But I have also seen some of the dinosaur material in the MAPS collection and it has a similar color. Remember some the first dino material found in North America came out of those Jersey streams. Also, I have found my share of slag and weird concretions, but I do think this is something else. 2 cents 1 Link to comment Share on other sites More sharing options...
The Jersey Devil Posted January 21, 2020 Share Posted January 21, 2020 I got to change my view on this, that’s definitely bone. Very interesting one actually. The coloration simply looks similar to a lot of the slag in the area. It is probably a shoulder or pelvic girdle from a turtle. There is matrix sticking to it, probably Wenonah formation. “You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal Link to comment Share on other sites More sharing options...
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