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Showing results for tags 'late cretaceous'.
Found 165 results
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In a late cretaceous marine formation I found two little pieces of jaw. I would like help in id if possible. One is maybe 2.5 cm in length and the other 3 cm, both have the ragged texture of almost everything from this site. I wonder (hope) if the upper is croc, and if the lower is a small mosasaur. It does not match the typical fish jaws that I find because of the sharp curve to the teeth. Help and ideas will be appreciated.
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This work by Denver Fowler reviews the stratigraphy of the Hell Creek Formation, as currently understood using the Fort Peck as his study area https://www.mdpi.com/2076-3263/10/11/435
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- late cretaceous
- lance formation
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Hello, My 9 year old son found this cool jaw section. It may be coincidental, but beside it was an ankylosaur tooth, partially rooted. We are unsure if it was associated. Perhaps someone will find this interesting or know more. Will post more photos if necessary.
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- late cretaceous
- dinosaur
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I recently found this at Big Brook in NJ, USA. I am not sure what this is. The outer layer appears to have a spiral formation towards one end. It's just about 1 inch long (maybe a little less). Thanks for any help!
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Good morning folks, I was sorting through a box of unknown fragments from surface collecting this summer. I inspected more closely this piece that looks like a spike. Not quite symmetrical. Looks like designed as potentially a partially lateral nodule or armor spike. I was referring to some past discussions on cerotopsian frill material and am curious if this may even be a frill spike?!? Any help would be appreciated. Thanks everyone.
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Dear Fellow Forum Members, On this day, the 4th of October in the year 2020, @itsronni @Masp @Trevor and @Jeffrey P ventured to a frequented late cretaceous stream in New Jersey. I first met up with Jeff and did some sifting before later locating itsronni and Masp further downstream. Finds came somewhat slowly after we first stopped to sift but after some time we gradually found more fossils. We stayed in one area for the majority of the day up until Jeff had to leave. After some deliberation, the remaining members and I walked a quarter mile upstream and then left shortly afterwards. It was a nice day to meet fellow forum members and also a nice day to collect fossils. Here are my finds, the others will post theirs when they can:
- 13 replies
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- 16
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- new jersey
- late cretaceous
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Hello, my son brought me this sparkling enamel fossil and I recognized it as a possible premaxillery tooth of a tyrannosaur?? I have found much larger ones but not ever this tiny. Any ideas what species it could belong to? Baby Albertosaurus? Raptor?
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Dear NJ fossil collectors, Would anyone like to join me for a sifting hunt on Oct.3rd / 4th (Saturday / Sunday) at Ramanessin Brook? DM me for a time or date, I can probably go both days. @Familyroadtrip @The Jersey Devil @frankh8147 @hokietech96 @Jeffrey P @Darktooth @brad hinkelman @itsronni @Bob-ay @FossilizedJello @Carl @bucky @wetwilly @Neec @ColeFossilFinder @Masp @butchndad
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Hello everyone, I saw this specimen for sale as a new species from the Vallecillo quarries. I haven’t seen something like this from this formation. Does anyone have any idea of what species might this be? The size of fossil is approximately 40 cms long. The size of the matrix is 63 cms * 43 cms. The pictures were not taken by me. Thanks everyone.
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Hello everyone, I hope life has been pacing along well for all of you. At the moment, I find myself at school and away from my idealistic home, that is, buried alongside the Cretaceous fossils swimming in the various soils of NJ. No worry though! I have been going through some micro gravel in Ohio and today will present you with my second batch of finds. I believe I've found some cool things so far. The most notable differences between this post and my previous (besides the fossils of course) is that I post fewer photos and more group shots. Enjoy. Meristodonoides sp. Rhombodus laevis + Other Rays Scapanorhynchus texanus (symphesial) Paralbula casei Hadrodus priscus Lonchidion babulskii Ischyrhiza mira Other Shark's Teeth Ptychotrygon sp. Osteichthyan Vertebrae Unidentified
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- 8
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- late cretaceous
- njfossils
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Found this in a marine late cretaceous formation in Maryland. Two bones that were immediately associated with each other. I thought the flat bone was turtle when I saw it, but this other bone was just underneath it. Now I really dont know what I am looking at. help?
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Hey everyone, I am curious to see your largest complete sawfish rostral spines, Xiphactinus sp. teeth, and Enchodus sp. teeth. Here are mine:
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- new jersey
- late cretaceous
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Hello everyone, in addition to posting my other topic today, I am going to post this one. With the summer coming to a close, I am preparing to go back to college in Ohio and continue my study of Neuroscience and Mathematics. The rain in Ohio and ID'ing NJ fossils in the ID section often make me lament all of potential NJ hunts I am missing out on because I am at school. So, I thought it would be a good idea to collect micro matrix using a window screen and stock several buckets full of gravel to look through during the semester. Over the last two weeks or so I've had the opportunity to do some early looking and will share my finds in this post. Hopefully I will be able to make many more NJ Micro trip reports during the course of the semester. I am still figuring out the proper mixture of lighting and camera angles. Also, you may notice it in this post, but I am adjusted the properties Exposure, Shadows, and Sharpness to get the optimal view of the fossils. The black borders and resizing of the photos were automatically done by a Python script I wrote. Perhaps with more micro reports I can become better at ID'ing what I find (there are still many things that I have found where I am at a loss for what they are) and taking photos. Enjoy. Here is my setup currently Here is some gravel I've looked through FOSSILS Format: <suspected ID> Maybe Rhombodus laevis AMALGAM OF RAYS 1 (tooth) 2 (tooth) 3 (tooth) 4 (tooth) 5 (tooth) 6 (denticle) 7 (denticle: In middle) Lonchidion babulskii Ptychotrygon sp. 1 2 Ischyrhiza mira 1 2 3 4 5 6 Squatina hassei (potentially) Hadrodus priscus 1 2 3 Ischyodus bifurcatus SHARK TEETH MISCELLANEOUS BUT POSSIBLY DIAGNOSTIC 1 2 GENERAL FINDS 1 2
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- njfossils
- late cretaceous
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Dear Fellow Forum goers, I intend this to be just a quick trip report. My friend @The Jersey Devil and I decided to do some collecting on what turned out to be a very pleasant day. Both of us were quite tired for some reason and didn't really hunt as intensely as we could have. We both did okay. I found some decent things, but nothing to write home about. Maybe next time. There were many leaves and trees down due to the recent winds. Overall, the experiences we had today 08/06/2020 were pretty good. I hope you enjoy what I found. - Trevor More appealing finds Medium bone chunk General finds
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- new jersey
- late cretaceous
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From abstract: Some authors recognize three Caenagnathid genera, others suggest only two were present, and there is considerable disagreement about which specimens are referable to which genus. This study aims to resolve this issue by reviewing the known specimens and using osteohistology, to establish a testable taxonomic framework of Dinosaur Park https://journals.library.ualberta.ca/vamp/index.php/VAMP/article/view/29362
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- dinosaur park formation
- caenagnathids
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I was given this very small piece of ?mandibular bone. Any help would be appreciated in id. it is approximately 12-14 mm in length, 4 mm in height and maybe 2 mm on the dental surface from the hells creek formation in montana.
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From the album New Jersey Late Cretaceous
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From the album New Jersey Late Cretaceous
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From the album New Jersey Late Cretaceous
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From the album New Jersey Late Cretaceous
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From the album New Jersey Late Cretaceous
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From the album New Jersey Late Cretaceous
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Every few years we get rewarded with a new dinosaur described from the Lance/Hell Creek Formations. In this crazy year we finally have one. Finally an Alvarezsauridae has been described from the Hell Creek Formation: Trierarchuncus prairiensis. Sorry its paywalled cannot make comments https://www.sciencedirect.com/science/article/pii/S0195667120302469 Here is some info on this very different dinosaur, one of my favorites, including some of my material so you can see what the paper is describing. Far better than what you see in the paper
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- trierarchuncus prairiensis
- alvarezsauridae
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Dear Fellow Forum members, Lately I have been somewhat frustrated by my dearth of knowledge on the Late Cretaceous deposits and fauna of NJ. I collect the Late Cretaceous of NJ frequently and am seeking a more thorough comprehension of everything related to it. While reading research papers can go far, there is some information that is proving difficult to find or procure. Here I have listed some of the questions that I have come up with, hopefully some can be answered. At the very least, some pointers would be a great start (links to papers, personal experiences, photos specimens in your collection, etc..). Cheers till we meet in the stream again. 1. What is the current state of knowledge on Peyeria sp. in NJ? 2. How many species of sand tiger are currently found in the NJ Late Cretaceous? 3. What is the best referential repository of finds for Necrocarcinus sp.? (probably MAPs, but I forgot to check when I went there) 4. Are there any documented pieces of Necrocarcinus sp. besides claw fragments? 5. Has Enchodus ferox been documented anywhere else in NJ other than Site H_? 6. How diagnostic are most teeth of the Crocodilia order in common stream systems? 7. Is there any dispute over whether X. vetus is the sole supplier of Xiphactinus. sp teeth in NJ? 8. Is there a specimen of C. magnus jaw fragment from NJ or MD? 9. What is the likelihood that some specimens of Ischyodus bifurcatus are in fact some other chimaeriforme? 10. How many documented Globidens sp. teeth from NJ exist in scientific repositories? 11. What are the primary differences between A. phaseolus and A. latidens? 12. What is the commonality (personal experience) of fused Chondrichthyian vertebrae as float? 13. Is there any work illuminating how many potential Pachyrhizodus species there are in NJ? 14. Is there a repository of scientifically accurate (well, as much as is possible) NJ fossil art work? 15. Does anyone have any pictures of Xiphactinus sp. or Enchodus sp. pectoral fins from NJ? 16. Does Squalicorax "kaupi" = Squalicorax lindstromi, or is the latter more specific? (Didn't S. kaupi refer to potentially multiple species? Is S. lindstromi a paleobucket too or one of the species S. kaupi may have referred to?) @Carl @non-remanié @frankh8147 @The Jersey Devil @Jeffrey P @njfossilhunter @hokietech96 @brad hinkelman @Darwin Ahoy
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- late cretaceous
- paleontology
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Hi all! The Aguja Formation matrix that I ordered from PaleoTex arrived on June 12th, but I decided to wait until school ended before I began the process of searching it. Well, school ended yesterday so I have begun the process today! My 5 pounds of matrix are currently soaking in a solution of baking soda and water (because the matrix arrived "unwashed"), but while stirring up the squishy contents with my hand, I found the following 3 items that I'd like your input on. Item #1: Could this be a ceratopsian spitter tooth??? @Troodon More to follow...
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- texas
- aguja formation
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