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Showing results for tags 'cretaceous'.
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Hi friends, can you help me with this? I went to Al Hasi city, Sulaiy formation ( Berriasian) , Cretaceous , to the north of Riyadh and found this strange fossils. It was a surface find; it is 20 cm long, 18 cm wide, and 3-4 cm thick. The outer face is rough and in layers , the inner surface is semicircular and smooth , similar fossils are everywhere in the same area in varies sizes . So what could it be?
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Had a banner day on the NJ Cretaceous stream beds, sifting through the fallen leaves scanning gravel bars for some impressive Scapanoryhnchus teeth. I swear I found a whole jaw in two hours!
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- shark teeth
- cretaceous
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New fossil bird from Kitadani Dinosaur Quarry, Fukui, Japan (open access paper)
Oxytropidoceras posted a topic in Fossil News
Fossil found in Fukui identified as new primitive bird species By Naoki Hirano, The Ashi Shimbun, December 4, 2019 http://www.asahi.com/ajw/articles/AJ201912040008.html Science News http://www.sci-news.com/paleontology/fukuipteryx-prima-07808.html The open access paper is: Imai, T., Azuma, Y., Kawabe, S., Shibata, M., Miyata, K., Wang, M. and Zhou, Z., 2019. An unusual bird (Theropoda, Avialae) from the Early Cretaceous of Japan suggests complex evolutionary history of basal birds. Communications biology, 2(1), pp.1-11. https://www.nature.com/articles/s42003-019-0639-4 Yours, Paul H.- 2 replies
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- kitadani formation
- cretaceous
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Hello all! I recently rearranged my collection so I figured this would be a good time to show some fossils! I usually hang-out in the New Jersey Cretaceous but I have been collecting fossils for over 25 years and have found some pretty cool specimens of creatures from many different eras, That said, my collection is mainly focused on the New Jersey Cretaceous, so let's start there. These are my displays for New Jersey Cretaceous non-reptile fossils. My favorites aren't actually fossils at all but rather casts of some of my favorite finds. The crab, Costadromia Hajzeri is the earlies known sponge crab and was named after me. The lungfish cast is of one of two specimens of late Cretaceous lungfish found from New Jersey (probable new species based on time period and 'crushing' element of teeth. The big Xiphactinus tooth is another of my favorite finds along with the echinoids and Menunites ammonite (pictured).
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From the album Cretaceous Shark Teeth
Texas Cretalamna with moderate pathologies, from Britton Formation, Eagle Ford Group. -
From the album Cretaceous Shark Teeth
Texas Cretalamna with moderate pathologies, from Britton Formation, Eagle Ford Group. -
From the album Cretaceous Shark Teeth
One of only 6 known Leptostyrax from the Kem Kem beds of Morocco. Lower Upper-Cenomanian in age. -
From the album Cretaceous Shark Teeth
Very rare Leptostyrax from the Kem Kem beds of Morocco. Lower Upper-Cenomanian in age. -
A new large Late Cretaceous lamniform shark from North America, with comments on the taxonomy, paleoecology, and evolution of the genus Cretodus Kenshu Shimada &Michael J. Everhart Article: e1673399 | Received 30 Nov 2018, Accepted 09 Sep 2019, Published online: 18 Nov 2019 LINK (description of Cretodus houghtonorum n.sp) edit:5,30 MB,or thereabouts relevant: Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character Vol. 210 (1921), pp. 311-407 V I I I .— On the Calcification o f the Vertebral Centra in Sharks and Rays. B y W . G. R id e w o o d, D.Sc. 18 MB!!
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- axial skeleton
- von bertalanffy growth function
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About a year and a half ago I found this rock that I highly suspect might be a coprolite. However, I figured I should get some second opinions, as I'm not very experienced with identifying these, beyond looking at it and thinking, "Yep, looks like a turd to me"... It seems to exhibit evidence of compaction and pinching though, which is what really prompted my diagnosis. Funnily enough, this is also what made me think it might have been a meteorite when I first found it. Anyway, it was found in an area where the late Campanian marine Bearpaw formation outcrops, but was among some glacial drift so I can't correlate it with a specific layer, or even with the Bearpaw formation itself. The size and shape indicates to me that it must be from either a plesiosaur or mosasaur, as it lacks the characteristic coiling of a shark coprolite. I also had a chance to look at this one under a microscope (no photos unfortunately), and noticed small flakes that had a superficial semblance to the iridescent, aragonitic nacre that's often found preserved in the molluscan fossils from the area (you can sort of see these in the second photo), which further makes me think that this is from a mosasaur. Thanks.
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These are among the first comma shrimp fossils from 97 million years ago. I didn't even know comma shrimp were a thing. They also found some crabs in this Northern South America site. https://m.phys.org/news/2019-11-world-oldest-comma-shrimp.html
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- south america
- cretaceous
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A Sentimental Journey (With Echinoids!) (of Texas) Part 6
JamieLynn posted a topic in Fossil Hunting Trips
Had a lovely day out hunting with a new fossil friend - @Nuna! She said let's go hunting in Austin - i know a spot! Turns out that spot was the creek near the house I grew up - lived there from age 6-17. I had not been back in a long long time.. and I certainly have not been in the creek since I was probably 10 years old! I realized that my earliest "fossil memory" was going to the creek with the neighbor kid Jimmy to hunt for fossils when we were 8 (2nd grade I guess?). I remember we found brachiopods... He then invited me to go to a Paleontology Society of Austin meeting. I remember being the two youngest there, for sure! Now, flash forward 40 years and i am now a member of the PSoA (joined a few months ago). So Nuna, her awesome dog Mack and I head down into the creek. It is absolutely beautiful. I did not know there was an easy access, we crawled down the culverts to get there in the past! I am not adverse to crawling through culverts, but am happy not to! We poked around, found those brachiopods! plus a few other little things, a few ammonite chunks. Then we found the sweet spot. Some of the biggest Neithia bivalves I've seen, lots of brachiopods, I found a lovely big Leptomaria gastropod, a broken Pecten wrighti and a little ammonite (Nuna found the good ammonite of the day) and some other nice stuff. But then I found a little chunk of something that I was not sure....but recognized it as fossil. And then I found a whole one....a gorgeous cidarid spine. And found another. Never found the body, but I love those spines! A few feet further, i see what looks like a heart urchin (of which there are LOTS in Central Texas in certain locations) so I was happy, but not super excited, until I realized it was a bit different than what I had found in the past. Turns out it is a new to me species - Holaster simplex! So a nostalgic walk in the park became a bonanza echinoid day for me. Big thanks to Nuna for taking me "back to my old hunting grounds"!!!! Based on the stuff we found, I'm assuming this is Georgetown formation.....any corroboration? Leptomaria gastro Pecten texana: ( i love the red coloration on this one) Pecten wrighti: Brachiopod Kingena: Echionid Holaster simplex: Cidarid Spine :- 12 replies
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Found this little tooth this weekend. I’m sure it must be a S. raphiodon but the cusplets come directly out of a broader based blade. Not like the others I usually find. May just be because it is a juvenile?
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- post oak
- cretaceous
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400 Million years in 4 hours The small-scale geology of Austria makes it possible to observe and collect invertebrate marine fossils from a time span of nearly 400 Million years (Ma) within a few hours and at a distance of only about 10 km: - 395 Ma old Devonian (Eifelian) corals - Ölberg - 80 Ma old Cretaceous (Campanian) rudists – St. Bartholomä - 12 Ma old Miocene (Serravallian/Sarmatian) gastropods - Waldhof I did this special hunting trip west of Graz at October 22, 2019 as a "feasibility study". The youngest and oldest fossils can simply be picked from the ground (or photographed); the “middle-agers” require some searching; I succeeded to find a few good specimens within one hour. Weather was perfect with nearly 25°C (!). Simplified geological map of Styria with the visited area west of Graz (red rectangle). Geological map of the visited area (1:50.000), composed of two adjoining map sheets. Red numbers denote visited fossil sites (and their age in Million years). Note the fossil sign in the blue formation in the upper middle of the map. This is the upper Devonian Steinberg-formation with goniatites. These fossils are not abundant, though, so I have never explored this hill… Topo map of the area. Red numbers denote fossil sites, A and B are sites of landscape pics. Just to show off some landscape: View from point “A” in Steinberg towards west. K = Kreuzegg mountain (570 m, Campanian St. Bartholomä-formation) at a distance of ca. 5 km. A = Plateau-like Amering mountain (2187 m, high-grade metamorphic rocks) at a distance of ca. 40 km. View from point “B” at Kreuzegg mountain towards north to southeast. Pano composed of 4 individual pics, spanning about 140°. Labeled mountains and hills in the background are: S = Schöckl (1445 m, Devonian epimetamorphic limestone) at a distance of ca. 20 km. P = Plabutsch mountain (754 m, namesake of the fossil-rich Eifelian Plabutsch-formation) and B = Buchkogel mountain (656 m), both at distance of ca. 10 km and located immediately to the west of Graz. Ölberg and Waldhof sites are between P and B, but not visible. Note the about 1000 m high, largely deforested mountains at the left side of the pano (Mühlberg, Pleschkogel etc., lower Devonian, dolomitic Flösserkogel-formation). The severe deforestation of these hills is due to a strong storm in 2008 (“Paula”). Continued...
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- eastern alps
- st. bartholomä-formation
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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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- snake
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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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- cretaceous
- queensland
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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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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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