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Showing results for tags 'cretaceous'.
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Hey everyone, I found this little jaw section at a microsite in North Dakota's Hell Creek formation this past summer and I'm finally getting around to posting about it. I believe it's fish, possibly gar, but I'm not sure. I'd like to know people's opinions. It's about 1.3 centimeters long. Thanks, Noel
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The legs show that snakes retained legs for 70 million years. More importantly, these fossils help explain the extreme flexibility of snake skulls. https://m.phys.org/news/2019-11-fossils-snakes-lost-legs.html
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- 6
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- cretaceous
- skull evolution
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Early Cretaceous feathers found in Australia - Koonwarra Fossil Bed
Oxytropidoceras posted a topic in Fossil News
First evidence of feathered polar dinosaurs found in Australia Uppsala University, November 12, 2019 https://www.sciencedaily.com/releases/2019/11/191112110235.htm The paper is: Martin Kundrát, Thomas H. Rich, Johan Lindgren, Peter Sjövall, Patricia Vickers-Rich, Luis M. Chiappe, Benjamin P. Kear. A polar dinosaur feather assemblage from Australia. Gondwana Research, 2019; DOI: 10.1016/j.gr.2019.10.004 https://www.sciencedirect.com/science/article/abs/pii/S1342937X19302850 Related publications, Koonwarra Fossil Bed, Dr Stephen Poropat https://stephenporopat.weebly.com/uploads/2/4/4/2/24423511/poropat_2018_the_koonwarra_fossil_bed._ferns_flowers_fleas_and_fish...and_feathers_for_good_measure.pdf https://www.researchgate.net/profile/Stephen_Poropat https://stephenporopat.weebly.com Bean, L.B., 2017. Reappraisal of Mesozoic fishes and associated invertebrates and flora from Talbragar and Koonwarra, eastern Australia. Proceedings of the Royal Society of Victoria, 129(1), pp.7-20. https://www.researchgate.net/publication/318676969_Reappraisal_of_Mesozoic_fishes_and_associated_invertebrates_and_flora_from_Talbragar_and_Koonwarra_Eastern_Australia Yours, Paul H.-
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- australia
- cretaceous
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Hello! I see this 3 amber Burmese pieces with feathers. The seller told my that the feathers are from dinosaur. I am looking for amber information but is difficult to find a good resource. What do you think? Amber 1
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I finished prepping this Enchodus jaw section last year but was undecided about repairing/replacing the tip of the tooth. Comments/suggestions?
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Hello all we found a selection of fish fossil bones in marine sediments in Richmond NW Queensland . They are all of Cretaceous age we found a few Jaws,Ribs and others . Would anyone be able to ID the species of fish . More pictures in comments Cheers
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- 3
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- cretaceous
- fish
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Dinosaur Park in Laurel, MD, is a tiny, 7.5-acre tract of county parkland surrounded by a business park in bustling, suburban Maryland. Nevertheless, it is the most prolific dinosaur and plant site east of the Mississippi. The first fossils there were found in the 18th century by slaves in the siderite (bog iron ore) mine that was there at the time. It wasn’t until 1858 that the bones turning up in the mine were identified as dinosaur remains. The bones found that year were from what would have been, if they a had done all the paperwork, the second dinosaur identified in the US, Astrodon johnstoni, which is now Maryland’s State Dinosaur[1] . Since then dinosaurs, turtles, small mammals, crocodilians, gastropods, clams, and tons of fossil plant material have been found there, all of it now at the Smithsonian. The site is part of the Arundel Formation, dating to the Lower Cretaceous, 115 mya, when the place was an oxbow lake. Tributaries were strong enough to wash dino bones into the lake. The fossils there are disarticulated wash-out. Whole skeletons are not generally found or expected here. The exposed hillside consists of a mix of fine grey soil, siderite bog iron and lignite (coalified fossil wood the consistency of charcoal). The lignite and siderite form a thin, dense gravel layer. The challenge for visitors and paleontology volunteers alike is to find the pale blue bones and shiny teeth in the cacophony of black and orange. Collection is done almost exclusively by surface scanning. If something large turns up by way of erosion, then they cordon it off and dig it out. Anything other than the wood is documented with the finder’s name and sent to the Smithsonian. Visitors may keep one palm-sized piece of fossil wood if they like. My husband and I met a friend and her two daughters there today. It was cold, but sunny. There were harsh shadows on the ground, which are supposed to make it easier to pick out shiny teeth. I find the contrast too harsh to see details. The park is open from noon to 4 every other Saturday. We got there close to 1 and spent a couple hours there, despite the chill in the air. I didn’t expect to find any exciting fauna. That’s usually our daughter’s job, and she was at work. I was engrossed in the lignite and the siderite plant impressions, hoping maybe to find a seed cone or two for their collection. Apparently, a handful in a day is not unusual there. I had no luck on either score. I did find a nice plant impression in the siderite. Looks like tree bark. I asked if that could be the one I took home. The volunteer looked at me sternly and asked, "Do you now what it is?" "Tree bark impression in siderite, but I don't know from which tree." “What do you do for a living?” “Artist.” “What do you do that will prove to me that this will be used for educational or scientific purposes?” I told him about my fossil blog and the homeschool paleontology series I just ran at my local library. He was convinced. Now I have it at home, but I may offer it to the Delaware Museum of Natural History, where I volunteer. Each of the girls also found something nice, albeit smaller, to bring home. Unsurprisingly, most of the other kids were disappointed because they didn’t find dinosaur teeth. There was a list at the registration table of maybe a dozen interesting things found today. As far as I know, no one found anything interesting while we were there. Some days go like that, but I was not disappointed. It was a good afternoon to see someplace new. [1] Maryland has both a State Dinosaur and a State Fossil. The State Fossil is a gastropod, Ecphora gardenera.
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- arundel formation
- cretaceous
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The left humerus of a juvenile hadrosaur. Found near Hamilton. The closest formation is Two Medicine formation. The deltopectoral crest seems fairly robust for such a young animal so I'm leaning towards this being Lambeosaurine instead of Saurolophine, which would make it most likely Hypacrosaurus. The shape also fits quite well with a juvenile Hypacrosaurus I have restored some small areas where there were large holes. But I have left the largest area of damage due to it being a little unclear as to how robust or slender that area would have been.
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- campanian
- cretaceous
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I know that Central Texas limestone can weather out into a WIDE variety of shapes and forms and I just assumed this was weathered limestone, cool looking but unremarkable. However, I have seen a couple of pics on the facebook rock groups of coral that looks suspiciously like this. However, I do not see the correct "striations" in mine that coral should have. So is this just a rock or is it coral? I don't believe there is any coral like this in the Cretaceous period, but I do not know, i might be wrong! Back side: A picture of one from the groups: I believe he said his was from New York, and was posibly older than Cretaceous I do not really remember. Similar, not exactly the same, but close enough it made me wonder.
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Hello Everyone, I need some help identifying what i have here. I have several pieces of matrix with a shell valve attached. All the pieces are less than 6 inches. They all have sort of a wavy-ness to them. Some seem to be part of a cluster ( 2 or 3 attached at the base) . These are maastrichtian from the Peedee formation in SE North Carolina. Thanks for your help.
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Hey everyone, I just wanted to post my find of the day! I was working through some of the Lance fm. channel deposit conglomerate from this summer's trip out west and when I was taking a closer look a bone fragment I noticed what appeared to be the glint of enamel just below it. I proceeded to uncover more of it and realized it was a tiny mammal tooth. It ended up coming loose from the matrix and I had to set it lightly on a piece of white paper as to avoid losing the minute fossil. Through closer inspection with my loupe I found that it had a morphology similar to a multituberculate tooth (cimolodon or mesodma) that I had found in South Dakota's Hell Creek during my trip. I am very pleased to have found this as there are little opportunities for me to find new fossils in November. Additionally, this may be the smallest tooth of any animal in my collection, and I'm proud I spotted it instead of overlooking it. Some perspective with a U.S. Penny (yes I know, not a valid unit of measurement, but it was the closest thing I had at that moment).
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- 6
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- channel deposit
- cretaceous
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I found all of these today at Fort Worth creek. I Identified most, like ammonite, nautiloid, gryphaea, bivalves, echinoids, but on the picture 2, what is that? Is that a oyster or a clam? Fourth picture is a mass gryphaea bed.
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- cretaceous
- fort worth
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While walking back to the car I walked over this interesting specimen. I do not know if it is a pseudo fossil most likely, feeding trace of a star fish with lots of arms most unlikely. This comes from the toolebuc formation in central Queensland and is cretaceous. The item in question is 60 mm across. Any comments appreciated. Mike
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Hi I am a newbie and wish to learn more on paleontology. I live in China and I hope to participate in this forum and learn more about fossils in general. Since China is rich in trilobite fossils I hope to learn more about them and also ask about some of the ones I purchased.
- 24 replies
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- cretaceous
- placoderms
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Hi everyone, while retrieving a wildlife camera in the woods I found this sticking out of red clay or loamy soil and was wondering what this is and has anyone found something similar. It’s heavy and non metallic.
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Hello everyone, I know this is a big scientific debate and I have researched about it but I haven't come to a conclusion. What do you think? Thank you
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Hi, Attached are photos of a small 5.5cm lobster I finished prepping. The original semi-prepped lump I purchased was identified as Shrimp or Crayfish, Cretaceous Period, from England. My research identifies it as a Meyeria Lobster from the "lobster beds" of the Greensand Formation, Fissicostatus Zone, Atherfield on the Isle of Wight, England. Does anyone have additional or corrected information?
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- cretaceous
- england
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Hello everyone, I found this bone while on a hunt in the cretaceous creeks of new jersey, very odd bone and definitely feels fossilized. My best guess is turtle but I am very unsure, I appreciate any feedback on this piece if it is Id'able thank you.
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Partial chevron of a hadrosaur. Likely Edmontosaurus.
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It’s a been a while with a drought here in Texas. Got some big rain recently and this guy popped out. Eagle Ford/Atco 86-90 mya
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- 15
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- cretaceous
- cretodus
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Nannodiamond plant microfossils created by extraterrestrial impact (open access paper)
Oxytropidoceras posted a topic in Fossil News
Shumilova, T.G., Ulyashev, V.V., Kazakov, V.A., Isaenko, S.I., Svetov,S.A., Chazhengina, S.Y., Kovalchuk, N.S., Karite – diamond fossil: a new type of natural diamond,Geoscience Frontiers, https://doi.org/10.1016/j.gsf.2019.09.011. (open access) https://www.sciencedirect.com/science/article/pii/S1674987119301768 Yours, Paul H.- 1 reply
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- astroblemes
- cretaceous
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So I've just added another new theropod tooth to the collection from the Kem Kem. I'm going to go out on a limb and say it's another contender for a potential dromaeosaurid tooth? • Very laterally compressed • "Pinched" to small degree at base • Mesial carina terminates well above the base • Slight twist to mesial carina • Mesial serration count (midline): 6 or 7 per 1mm • Distal serration count (midline): 3 or 4 per 1mm There are also interdental succuli present between distal denticles; not something I've particularly noticed on other dromaeosaurids, so I'm not sure if that has any impact on tentative ID? Lingual side?: Lateral side?: Cross section: Mesial face: Distal face: Pinch at base: Close-ups:
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- cretaceous
- kem kem
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Hello everyone, after having seen many pictures of "nanotyrannus" and t rex teeth i have some questions. The first one being, how can paleontologists distinguish nano teeth from rex teeth and also sell them for a different price when the current theory is that they are the same dinosaur, also in many cases I have seen nano teeth with the same size as t rex teeth differentiated, so if they are the same dinosaur how can this be possible? Thank you for your time.
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North Sulphur River Texas Cretaceous find. Is this coral or a worn Globidens tooth? I'm leaning towards coral. Both are pretty rare finds at NSR so I'm not sure.
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