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Showing results for tags 'jurassic'.
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Grallator Footprint France
Lucid_Bot posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi, again please let me know if this is not a genuine Grallator footprint. It's from Languedoc Rousslion France and Lower Jurassic. Again thanks to all for the help. I won't be buying impulsively again.
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From the album: Vertebrates
Pseudorhina alifera Muenster 1843 Late Jurassic Tithonian Sappenfeld Bavaria Germany -
Aspidorhynchus acutirostris (Blainville, 1818)
oilshale posted a gallery image in Member Collections
From the album: Vertebrates
Aspidorhynchus acutirostris (Blainville, 1818) Late Jurassic Kimmeridgian (late) - Tithonian (early) Painten Formation Painten Bavaria Germany This fish lies in an extremely soft rock and was very difficult to prepare. At the slightest touch (even with a small brush) scales could come off. Unfortunately the top of the skull is slightly dislocated.- 1 comment
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- aspidorhynchus
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Hi I found such a specimen today. Is it a brachiopod or a clam? Age is Jurassic Callovian. Thank you in advance for your help and best regards. Found: Częstochowa, Grabówka,Poland
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From the album: Vertebrates
Gyrodus circularis Agassiz, 1843 Late Jurassic Tithonian Painten Formation Painten Germany -
From the album: Invertebrates
Daohugocorixa vulcanica Zhang, 2010 Jurassic Callovian - Oxfordian Jiulongshan Formation Daohugou Inner Mongolia China -
Horseshoe Crab with Modest Color Enhancement
Lucid_Bot posted a topic in Is It Real? How to Recognize Fossil Fabrications
This piece is supposedly a horseshoe crab ( Mesolimulus walchii) from the Solnhofen limestone of Germany. It is Jurassic and the description says there has only been mild color enhancement. Is this fossil real? Any fabrication? Thanks for the answers!
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Taxonomy from Chen et al. 2019. Diagnosis from Wang et al., p. 1233: "Tegmen c. 3.5 times as long as wide, with apex widely rounded; basal cell c. 0.17 times as long as tegmen length, closed with anastomosis; common stalk ScR + M very short; branch ScRA c. 1.5 times as long as stem ScR; stem CuA at base distinctly convex, forking basad of claval apex; stigmal cell narrow, c. half as wide as radial cell." Line drawing from Wang et al. 2012, p. 1227: References: WANG, B., SZWEDO, J. & ZHANG, H. (2012). NEW JURASSIC CERCOPOIDEA FROM CHINA AND THEIR EVOLUTIONARY SIGNIFICANCE (INSECTA: HEMIPTERA) Palaeontology, Vol. 55, Part 6, 2012, pp. 1223–1243] Chen, J., Wang, B., Zheng, Y., Jiang, H., Jiang, T., Zhang, J. Q., An, B. Z. and Zhang, H. C. (2019). New fossil data and phylogenetic inferences shed light on the morphological disparity of Mesozoic Sinoalidae (Hemiptera, Cicadomorpha). Organisms Diversity & Evolution 19:287-302 [M. Clapham/M. Clapham]
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- daohugou
- froghopper
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Hello everyone, and I hope you've had a good weekend. I have purchased this brittle star found in the Solnhofen Limestone. Here are the two images they have provided - in any case, they're probably higher quality than my phone would be able to take. They have labelled it as an unidentified species, and that it is known to have grown to a maximum of 3 centimeters across. The slab my specimen is on is 3 cm itself. What should I label it as in my display cabinet? Thanks for the help, it has been much appreciated over the last few weeks.
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- brittlestar
- echinoderm
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Race to find world's oldest mammal fossils led to academic warfare in United Kingdom
Oxytropidoceras posted a topic in Fossil News
Race to find world's oldest mammal fossils led to academic warfare in the 1970s PhysOrgCom, October 10, 2023 The open access paper is: Benton, M.J., Gill, P.G. and Whiteside, D.I., 2023. Finding the world’s oldest mammals: sieving, dialectical materialism, and squabbles. Zoological Journal of the Linnean Society, p.zlad089. Yours, Paul H. -
Hi, i've taken this near the Jurassic Pterosaur beach in the Department Lot, France. The item is 2 cm at the longent part. On the pièces i"ve taken there are dessication traces and calcite. On one of them i have a partial print and on another i have fossilized rain drops. I wondered if that shape could be the print of a little tridactyl animal which used its heel to walk or if it is geologic. Here it is seen in different angles and with a skirting Light.
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In my opinion, the black colour and the good state of the inner whorls give a more elegant touch to this fossil. I still dont know what type of rock are but its amazing
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Taxonomy from Fossilworks.org. Etymology: The specific name tenuis, thin, feminine gender of the Latin, referring to the thinness and delicateness of the body. Diagnosis from Zheng et al. 2021, p. 150: "Forewing long (7.9 mm in length), ovipositor sheath as long as M+Cu and strongly narrowed toward acute apex." Line drawing from Zheng et al. 2021, p. 152: Identified by Prof. A. Rasnitsyn, Russian Academy of Sciences. References: Wang M., Shih C.K. & Ren D. 2012. Platyxyela gen. nov. (Hymenoptera, Xyelidae, Macroxyelinae) from the Middle Jurassic of China. Zootaxa 3456 (1): 82–588. Zheng Y., Hu H., Chen D., Chen J., Zhang H. & Rasnitsyn A.P. 2021. New fossil records of Xyelidae (Hymenoptera) from the Middle Jurassic of Inner Mongolia, China. European Journal of Taxonomy 733: 146–159.
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Fossils: Boy finds 200-million-year-old ammonite on beach at Vale of Glamorgan, United Kingdom
Oxytropidoceras posted a topic in Fossil News
Fossils: Boy finds 200-million-year-old ammonite on beach By David Grundy, BBC News, United Kingdpm, March 30, 2023 Yours, Paul H.- 1 reply
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- ammonites
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hi guys, I am asking your help.... It is quite eroded but im confident that the expertise in the forum could help me identify. It was found in a Jurassic stratification in the south of Europe. Thanks
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Death By Ammonite" Shows Jurassic Fish's Fatal Last Meal 180 Million Years On
Oxytropidoceras posted a topic in Fossil News
'Like swallowing a dinner plate': 180 million-year-old fish may have choked to death on its supersized supper, Ethan Freedman, LiveScience, August 14, 2023 Death By Ammonite" Shows Jurassic Fish's Fatal Last Meal 180 Million Years On Racheal Funnell, IFLscience, August 2, 2023 The open access paper is: Cooper, S.L. and Maxwell, E.E., 2023. Death by ammonite: fatal ingestion of an ammonoid shell by an Early Jurassic bony fish. Geological Magazine, 160(7), pp.1254-1261. Yours, Paul H.-
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- actinopterygian
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At the end of August we went on a quick two day trip to see if the creeks we hunt for Pleistocene megafauna in near Tambar Springs were still full of water. Unfortunately, most of the creeks were still full but we did have one nice section of dry creek bed to walk while we were up there. A lot of the things we find are either shards or particularly robust bones (e.g. kangaroo calcanea), and occasionally jaws or teeth. This is because the material tends to weather out of its original layer and gets redeposited into newer gravelly layers, a process which tumbles and grinds up the fossils. Here are a couple of examples. Bone fragment in situ: Macropod tooth fragment from the same bank: A photo of the gravelly bank the last two specimens were found in. The rocks seem to be a mixture of Tertiary basalt and Jurassic sandstone (also petrified wood). Some of these alluvial gravel layers may still be very old, however the Pleistocene fossils they contain weren't originally deposited in them. Very rarely, we found sections of what I assume is the original fossil containing deposit. It is a soft, sandy clay which has occasional small pebbles and bands of calcrete. It is here we found our best find this trip, a partial wombat (Vombatus sp.) skull! In situ photos: After removing from the bank: A pretty intense storm rolled in that afternoon. Fortunately we missed the bulk of it while we were in the field! More to come...
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Found these ammonites (spiecies?) And also a few of the "flipper" looking one, last picture. I'm wondering what that could be. Part of something or trace of something? Found in svalbard, ymerbukta. Between middle jurassic and early cretaceous.
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Here is a 4.1 cm claw from Madagascar. It's supposedly Jurassic but I'm under the impression that it's easy to mix up Jurassic and cretaceous deposits there,so could this be an abelisaur claw? @Troodon
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Hi all! Today I'll show you a site which is quite similar to the subject of the Frozen Fossils topic, but somewhat opposite of the latter, as it's only accessible in summer (end of July- beginning of September). It's situated in the historical city of Vladimir on the Klyazma river. The banks are overgrown with vegetation, no movement whatsoever on the river and very few people visible. Occasional ducks and herons, fish splashing nearby.The bridge is the only reminder of civilization. The river bed is surprisingly formed of solid clay you can confidently walk on. The age of this clay is Lower Kimmeridgian (mostly the 1st bauhini/baylei zone which is pretty rare in European Russia)
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The Ammonite Wall of Digne-Les-Bains: A Closer Look at This Geological Marvel, The Rockseeker Dalle à ammonites - Wikipedia - lots of pictures Another URL A paper is: Bert, D., Bousquet, V., Guiomar, M., Bariani, F., Hippolyte, J.C., Bromblet, P., Garciaz, J.L., Fleury, J., Mathieu, P., Pagès, J.S. and Tardieu, P., 2022. The Geotouristic Project “the Geological Adventure” to the Rescue of an Iconic World Heritage Geosite, the Ammonites Slab of Digne-les-Bains (National Geological Nature Reserve of Haute-Provence and Unesco Global Geopark, France). Geoheritage, 14(3), p.101. PDF of preprint of Bousquet et al. (2022) - Sorry, no figures Abstract and paywalled paper A field trip guidebook that includes the "ammonite slab" is: Livret-Guide d'excursion géologique, congrès de l'Association des paléontologues français, 3-5 Mai 2007 Yours, Paul H.
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- alpes de haute-provence
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First-Ever Jurassic Vertebrate Fossils Discovered in Texas
Oxytropidoceras posted a topic in Fossil News
First-Ever Jurassic Vertebrate Fossils Discovered in Texas University of Texas, Austin, Agust 23, 2023 The open access paper is: May, S.R., Bader, K.S., Boucher, L.D., Jacobs, L.L., Lively, J.R., Myers, T.S. and Polcyn, M.J., 2023. A record of Late Jurassic vertebrates from Texas. Rocky Mountain Geology, 58(1), pp.19-37. Another recent open access publication: Cornell, W., Doser, D., Langford, R., Villalobos, J. and Ricketts, J., 2023. The Geology of El Paso. Yours, Paul H.-
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Hello to all. Please help me identify this branch. It was found on the banks of the Kremenchug reservoir in Ukraine. This is a large reservoir, which is adjacent to three regions. It is difficult to determine the age - water erodes the layers from the Neogene period to the Jurassic. Thank you!
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From the album: Fossils from the Plattenkalke of the Altmühl Valley
11 cm long partly colored Eryon from Solnhofen with nicely preserved claws and antenna. Seen from the bottom side-
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Found these in Romana, town: Anina. (Eastern Europe). The place is known for plant fossils and other such things. In an article, I saw a journalist say the fossils found there are Jurassic. Are these plant fossils, stems or just markings? I am bad at telling. If it is plant, do you know which one could it be? Bonus one: I am not sure if the order of the pictures will get messed up, but last few pictures I uploaded is a grey "slate" with something in the middle. What is that? If these are just rocks, pretend you've never seen this Thanks!
