Fishinfossil Posted March 25, 2020 Share Posted March 25, 2020 A few months back I was exploring a new stream in New Jersey and stumbled upon some matrix where I found this Ammonite. I am not too familiar with NJ Ammonites. Can anyone help identify this particular species? I thought it was pretty cool. Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 25, 2020 Author Share Posted March 25, 2020 Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 25, 2020 Author Share Posted March 25, 2020 Link to comment Share on other sites More sharing options...
Darktooth Posted March 25, 2020 Share Posted March 25, 2020 @frankh8147 @Carl @The Jersey Devil I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
Pterygotus Posted March 25, 2020 Share Posted March 25, 2020 Are you sure this is an ammonite as I’m not seeing resemblance to one. Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 25, 2020 Share Posted March 25, 2020 This looks like a concretion to me. I am not seeing any sutures which would indicate that it was an ammonite. 1 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...
Jeffrey P Posted March 25, 2020 Share Posted March 25, 2020 I would like to see the specimen from some different angles. What I see there doesn't appear to be an ammonite. Bivalve maybe? 3 Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 25, 2020 Author Share Posted March 25, 2020 It's hard to tell from the photos, but on the bottom there are distinct ridges and the overall shape is like a hubcap, like a flying saucer in a way. Here's another image or two showing how it stands out form the rest of the matrix. As well, scroll down I am going to include another interesting specimen I found right next to it. I'm not proficient enough to determine what it is, but maybe you all can help. Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 25, 2020 Author Share Posted March 25, 2020 Here's a side view. Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 25, 2020 Author Share Posted March 25, 2020 And here's the other cool specimen.... Link to comment Share on other sites More sharing options...
FossilDAWG Posted March 25, 2020 Share Posted March 25, 2020 What you have is an internal mold of the interior of a bivalve. The "distinct ridges" are an impression of the hinge area. Don 8 Link to comment Share on other sites More sharing options...
frankh8147 Posted March 25, 2020 Share Posted March 25, 2020 I agree on bivalve. Here is one of mine that looks similar.. 5 Link to comment Share on other sites More sharing options...
The Jersey Devil Posted March 25, 2020 Share Posted March 25, 2020 It's a nice bivalve cast. That second specimen is interesting. My first impression was Inoceramus, but I don't think it is that. 5 “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...
Ludwigia Posted March 25, 2020 Share Posted March 25, 2020 Bivalves both. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Carl Posted March 28, 2020 Share Posted March 28, 2020 I'd go with Pycnodonte internal mold for that first specimen. Some of the brooks are loaded with these things. I agree that the second is not likely to be Inoceramus. If you know how to reach Ralph Johnson, he'll know. 6 Link to comment Share on other sites More sharing options...
erose Posted March 28, 2020 Share Posted March 28, 2020 (edited) The second fossil may be Gryphaeostrea vomer. At least that is what the concentric growth lines remind me of. Edited March 28, 2020 by erose typo, again! 4 Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 29, 2020 Author Share Posted March 29, 2020 @Carl @erose Thanks for the ideas. What era are those species from? Generally, in NJ the streams are cretaceous, but from what I gather the area I was in might have been of older origin. The Pycnodonte does resemble the spiral of the shell somewhat, and the Gryphaeostrea vomer certainly has a similar appearance. Link to comment Share on other sites More sharing options...
erose Posted March 30, 2020 Share Posted March 30, 2020 Late Cretaceous. Where did you find these? Link to comment Share on other sites More sharing options...
Fishinfossil Posted March 31, 2020 Author Share Posted March 31, 2020 @erose @The Jersey DevilSmall NJ Tributary outside the regulars Just chipped away at some matrix today and found a mess of small gastropod type shells, as well as an orange flaky piece which I suspected was something from a shrimp or crab crustacean then found the pincer of a claw within it. Stoked! Link to comment Share on other sites More sharing options...
The Jersey Devil Posted March 31, 2020 Share Posted March 31, 2020 14 hours ago, Fishinfossil said: @erose @The Jersey DevilSmall NJ Tributary outside the regulars Just chipped away at some matrix today and found a mess of small gastropod type shells, as well as an orange flaky piece which I suspected was something from a shrimp or crab crustacean then found the pincer of a claw within it. Stoked! Would love to see pics “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...
Fishinfossil Posted April 3, 2020 Author Share Posted April 3, 2020 @The Jersey Devil Will take some images tomorrow and post on separate thread. Link to comment Share on other sites More sharing options...
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