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Showing results for tags 'jurassic'.
Found 581 results
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New Dinosaur Listings Red Flags
Troodon posted a topic in Is It Real? How to Recognize Fossil Fabrications
A few red flags I would like members to be aware of : This specimen is being listed as a rare Dinosaur bone an ulna. ----Nice piece but its a rib from the reptile Champsosaurus This specinen is being offered as a Carcharodontosaurus foot claw ----Suspect this is from a Spinosaurid since it appears to compare well a known morphology. Would like to see a ventral view to confirm These teeth are being listed as the spinosaurid Sigilmassasaurus from the Kem Kem ----We have no idea how to distinguish teeth from different Spinosaurid's in the Kem Kem. I purchased one tooth from earlier listings to examine it. No surprises met expectation did not see any difference from other teeth other than a slight curvature, no evidence of denticles. Your call. This claw is being listed as an Archarodontosaurus hand claw from Madagascar ----This sauropod is only known from a jaw section and teeth and no postcranial material unless there are unpublished finds. Its the only described Sauropod from that locality but being Jurassic its most likely other sauropods were present. Who knows but nice claw. Reminder to newer collectors, lots of fake dinosaur eggs out there. Post any interest before you buy. Here are a couple For laughs this Dinosaur bone claw tooth being listed. Oh its covered in marine life And finally if you missed this post- 4 replies
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- jurassic
- cretaceous
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Dactylioceras tenuicostatum prepared inside a concretion.
xraymike79 posted a topic in Member Collections
94mm Dactylioceras tenuicostatum prepared inside a geode. Tenuicostatum zone, Early/Lower Toarcian (183.0 - 182.0 Mya) Kettleness, North Yorkshire, UK I bought this from a well known collector named Anders Grube in Germany. -
I found this object last week near Cayton bay, (Jurassic Coast) UK. It was sticking out of a cliff face. I don't know if it is just a water-worn 'stone' or something more interesting. I have attached several photos from various angles. Would anyone be able to tell me if it is something fossilised or, should it simply be adorning my rockery? Regards, Alan.
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Hello, I recently went fossil hunting at Cayton Bay near Scarborough, UK (Part of the Jurassic Coast). I found this (see attached Photos) and was wondering what it might be? The two photos show the fossil from different angles. Any help you could give would be much appreciated. Best regards, Alan.
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Some time ago, @Fossildude19 gave me some bits of Diplurus in diamond hard shale to practice different prep techniques on the tiny little fish. In the same box, Tim sent me a few partial fish of a different species. I got to spend a few minutes working on one of them this afternoon. It is difficult to tell which side is up since this fish has some face issues. Many of the bones are displaced but well preserved. The real question is ID. I’m hoping Tim knows but if not, I have some good features to go on. This fish has distinct gar-like scales and small peg-like teeth.
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Im wondering if its even possible to get species information on this one. Part of the estate that I have posted other fossils from. Possibly at least an i.d on what bone this is anatomically would be better than the information I have now. Written on the fossil says "Utah, Jurassic". Those are your clues. Weight: 2.5 kg Length: 7 inch Width: 5.75 in
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As I was putting together labels with photos containing microscopic images of inclusions in coprolites, I came across something that I may have misidentified as a fish tail and vertebrae in a very small coprolite. After looking at it again, the tail looks more like a shrimp or crawfish tail than that of a fish. What I thought were fish vertebrae, look more like crustacean arm joints/elements. Can anyone please confirm this for me? Thanks a bunch! Formation: Oxford Clay (Jurassic - Callovian) Location: Orton Pit, near Peterborough, Cambridgeshire, England
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Hi, This is another piece from Durlston Bay, Dorset. I picked this one up because of the marine snails in the bed but can anyone tell me what the other fragment is?
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Can anyone tell me more? I think that it is a shark tooth. It came from Durlston Bay, (The eastern Peveril Point end) near Swanage on Dorsets Jurassic coast. All comments welcome, including on my poor photographic skills.
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Marshosaurus Tooth for Sale
Troodon posted a topic in Is It Real? How to Recognize Fossil Fabrications
I saw this Marshosaurus tooth for sale so decided to check it out since some of you might be interested in it. I have some concerns why I decided to post it. If interested you need to do some work. Its not easy to TRY to ID a tooth and most are just identified to a morphology so no guarantee any of this will get answers. 1) The mesial carina is hard to see but seems to extend close to the base. In Megalosaurids it should only extend + 1/2 of the crown height. If interested you should request sharper photos to get a better look. 2) The denticles seem to be apically directed. In Megalosaurids they should be positioned perpendicular to the carina. Again if interested request additional close-up photos. 3) To do your homework properly request a serration count 5mm wide in the center of the distal serrations. With the mesial serrations missing its a data point you are missing. You should be around 16 or above for the distal side 4) The very tip looks it might a resto. They mention that the tooth has had minor crack filling yet there is visible crack in the top photo. Find out were the fill was done and if anything was done to the tip or was that the fill. A closeup of the tip should be requested. 5) The CRB, Crown Base ratio, should be around .5 to confirm that fits within what is seen on marshosaurus. So you need to request the length and width at the base, see photo to insure its done properly Must use the dimensions of a complete tooth.- 2 replies
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- marshosaurus
- morrison formation
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Oxfordian of southern Poland rich in Perisphinctidae. Just a belemnite, I suppose? Unlikely a bone?
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Consolidation of My Jurassic Park Collection that has been posted. Can also provide a good reference source Jurassic: Allosaurus Morrison Formation: Sauropods Morrison Formation Cretaceous: Cloverly Formation & Deinonychus Two Medicine Formation Judith River Formation Hell Creek/Lance Tyrannosaurs Hell Creek/Lance: Edmontosaurus Hell Creek: Pachycephalosaurid Domes Hell Creek/Lance: Ankylosaurid Hell Creek/Lance: Troodontids Hell Creek/Lance: Ornithomimids Hell Creek/Lance: Large Bodied Ceratopsian Hell Creek: Leptoceratops Hell Creek/Lance: Birds, Pterosaur & Unknown Hell Creek: Injured or Diseased Bones United States - Texas/ Other States Hell Creek: Turtle Skulls & more MicroTeeth - Texas Bones - Kem Kem & Canada Europe Morocco - Kem Kem Beds Morocco - Kem Kem Claws Uzbekistan Thailand
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The REAL Bigfoot. A nearly meter-wide Sauropod dinosaur foot, unearthed 20 years ago from mudstone in northeastern Wyoming, is the largest yet found is described in the attached paper. The other dinosaur skeletons found at the site have yet to be identified, but the size and shape of the foot bones indicate that it once belonged to a brachiosaur. https://peerj.com/articles/5250/ Maltese A, Tschopp E, Holwerda F, Burnham D. (2018) The real Bigfoot: a pes from Wyoming, USA is the largest sauropod pes ever reported and the northern-most occurrence of brachiosaurids in the Upper Jurassic Morrison Formation. PeerJ 6:e5250
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- jurassic
- morrison formation
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This is very tiny stuff from Durlston Bay, on Dorsets Jurassic coast. I think that I have some teeth, but are they fish or reptile? Can anyone identify the larger plate at the top of the first picture? All contributions welcome.
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Hello fellow fossil fans, This a very large piece from Durlston Bay, just past Peveril Point west of Swanage on Dorsets Jurassic coast. The location is better known for shell beds small fragments of reptile and fish particularly teeth. Sorry that I don't have a ruler on me for scale, the spoon is a tea spoon and the whole specimen is just over a foot across. Is it a footprint or have I manhandled a very heavy psudofossil a long way for nothing? All coments welcome, its not the greatest of pictures so if more is required let me know.
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Hi, I found these while pulling apart loose shale eroding from the rockface at the Lady's Walk Shale, Scotland. Be interested for any thoughts...! Can upload better pics if needed.
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amblysemius Comments Amblysemius was clearly a predator as evidenced by its mouth full of sharp teeth. It was a notable fast swimmer. Together with its only sister genus Caturus, Amblysemius was a member of the extinct Halecomorpha family Caturidae. It appears that the halecomorph Liodesmus, known from Solnhofen only, is related to the Caturids, rather than the amiiforms, as has been usually surmised. Once a diverse major group of bony fishes, the Halecomorpha have only one surviving member, the bowfin (Amia calva) of eastern North America. Living bowfins are remarkably hardy since they have a swim bladder that opens into their esophagus so they can gulp air, and hence survive in water with low oxygen. Amblysemius was a primitive species of fish that thrived during the Jurassic Period but went extinct by the Lower Cretaceous Period. Amblysemius possessed ganoid scales that are more cycloid in nature and as a member of the holosteans a bony skeleton with a partially ossified vertebral column. The Caturidae are represented in the Solnhofen Formation by at least four species: Caturus furcatus Agassiz 1834 and Caturus giganteus Wagner, 1851. Caturus pachyurus Agassiz, 1833 and Caturus bellicianus Thiollière 1852 from Solnhofen, Germany and Cerin, France were transferred to the revived sister genus Amblysemius (now Amblysemius pachyurus and Amblysemius bellicianus). Compared to Caturus, Amblysemius is characterized by its more slender body outline, the bigger and more deeply forked caudal fin being heterocerc with the upper lobe clearly longer than the lower one and the strong dentition. Amblysemius has considerably smaller scales compared to Caturus. Maximum length is around 50cm; this specimen has only 20cm or 8". Lit.: Paul Lambers (1994) The halecomorph fishes Caturus and Amblysemius in the lithographic limestone of Solnhofen (Tithonian), Bavaria. Geobios 27:91-99
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Hi, Went on a small hike today in my local area, Glouctershire UK. There is a hillside that was once part of the sea during the Jurassic period. Found this strange looking thing that really stood out. It was palm sized, found shells embedded in the rock a few feet away. Fossil or just a strange shaped rock? Any help welcomed, thanks!
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From the album Vertebrates
Belonostomus sphyraenoides Agassiz, 1844 Late Jurassic Tithonian Eichstätt Bavaria Germany -
https://gbtimes.com/jurassic-period-snake-necked-turtle-fossil-found-in-sw-china
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I really feel like I should recognise these, but just don't. I wondered if one was a bivalve shell, but it's unlike any I have found, and the other perhaps an impression of an ammonite. Any help appreciated. Jurassic, Oxford Clay, Peterborough member. @DE&i
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From the album Vertebrates
Caturus furcatus AGASSIZ, 1834 Upper Jurassic Schernfeld Bavaria Germany Length 18cm So far unprepped -
I wonder what is it ? If coprolite or something else. Thank you for any help
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From the album Dinosaurs and Reptiles
Rooted marine croc tooth from Jurassic -
From the album Vertebrates
Salamander non det Late Jurassic Daohugou biota Ningcheng Nei Mongol PRC
