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Showing results for tags 'Jurassic'.
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Gastropod Ooliticia oxfordiensis Jurassic UK Oxford Clay
JamieLynn posted a gallery image in Member Collections
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From the album: Jurassic Coast UK Oxford Clay Formation
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From the album: Jurassic Coast UK Oxford Clay Formation
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Cephalopod Belemnite Phragmocone UK Jurassic Oxford Clay
JamieLynn posted a gallery image in Member Collections
From the album: Jurassic Coast UK Oxford Clay Formation
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From the album: Jurassic Coast UK Oxford Clay Formation
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Serpulid Worm Genicularia vertebralis Jurassic UK
JamieLynn posted a gallery image in Member Collections
From the album: Jurassic Coast UK Oxford Clay Formation
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Calcium phosphate preservation of Posidonia Shale (Germany) fossils
Oxytropidoceras posted a topic in Fossil News
‘Golden’ (phosphate) fossils reveal new secrets; provide clues to Jurassic extinction event by: Eric Henrikson, KXAN News, Nexstar Media Inc., Texas, June 14, 2023 The paywalled paper is: Muscente, A.D., Vinnes, O., Sinha, S., Schiffbauer, J.D., Maxwell, E.E., Schweigert, G. and Martindale, R.C., 2023. What role does anoxia play in exceptional fossil preservation? Lessons from the taphonomy of the Posidonia Shale (Germany). Earth-Science Reviews, p.104323. Yours, Paul H. -
Lincolnshire Limestone, Oolite Group, Middle Jurassic, Bajocian Im not sure what to make of this, was thinking maybe fish fragment. Particularly puzzled by the circular pattern. I've dampened it with water to help it show more clearly in the photo. Scale is mm.
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Hello all! I am looking for books/literature that show descriptions and illustrations of belemnites (belemnoids). In the book there must be information about belemnites, colour or black-white photographs and reconstructions of the fossil/animal (how the animal looked like in real life and perhaps description of the rostrum). If anyone know some titles, that would be wonderful! Kind regards, Ruben
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I found it inside a rock that my cousin's husband found it two days ago during fossil collecting trip at Holderbank, Aargau, Switzerland.
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My cousin's husband found it two days ago during fossil collecting with me and my family at Holderbank, Aargau, Switzerland.
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Oxford Clay, Callovian, Peterborough Member I'm wondering if this pitted fragment is crustacean. It seems wrong for a scute, although there is some similarity to fish scales I have in overall shape. Or something entirely different. Scale is mm. The most similar thing I've found are ostracods.
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Hello! I wonder if anyone would be kind enough to look at this for me and help confirm it’s ID? I’m quite inexperienced and when I found this over the winter, I crammed as much info on ID-ing bone as I could and concluded it was wood / plant material. I find a lot of wood in this area, so that makes sense. It happened to be in the background of a photo I posted to Instagram, and someone said they’re sure it’s bone - so I thought I’d double check here. It’s from the Helmsdale, North of Scotland - Jurassic-aged Portgower Boulder Beds member (157.3 - 152.1 mya, Kimmeridgian). I’ve shown both sides, as some of it’s visible from that back of the rock too. There’s also a smaller piece of what looks to be the same sort of material on the other side too. (apologies I can’t seem to upload the photos in the order I intended - I hope they make sense)
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BVP Fieldtrip to Solnhofen Limestone (Jurassic of Germany) + Museum visit
ziggycardon posted a topic in Fossil Hunting Trips
Hi Everyone! A couple of days ago I returned from a fieldtrip to the Solnhofen region in Germany. The trip was organized by my fossilclub the BVP as well as my friend and professional paleontologist Jonathan Wallaard who led the trip. During our 4 day stay we visited 3 different quarries and the Burgermeister-Müller-Museum in Solnhofen. The Solnhofen Limestone is probably one of the most famous Konservat-Lagerstätte in the World. Dating back to the late Jurassic, Tithonian around 152 - 150 million years ago. During this time this area was a tropical archipelago in the Tethys Sea with many small islands and shallow lagoons. Due to its exceptional preservation we have an extensive record of the marine fauna as well a some knowledge of terrestrial species which inhabited the islands (which should have been located around 30 km from the mainland if I heard correctly from one of the quarry owners.) These seas were home to multiple species of ammonites, belemnites and squids; crinoïds like the free-floating Saccocoma; Echinoïds and Starfish; Horseshoe crabs, lobsters, crabs and schrimps; as well as sponges, corals, jellyfish, bivalves, gastropods and brachiopods (which are relatively rare finds.) But also a large diversity of bony fish (some of which could reach multiple meters in length), Hybodont sharks, Chimaera's as well as marine reptiles like the Ichthyosaur "Aegirosaurus", marine crocodiles, turtles and Pleurosaurus. The islands were home to Cycads and Araucariaceae trees, but also by many insects like dragonflies and beetles, reptiles like Sphenodonts and Squamates. Though the most famous of its inhabitants must have been the pterosaurs like Pterodactylus and Rhamphorhynchus as well as some dinosaurs like Compsognathus, Juravenator, Sciurumimus, Archaeopteryx and Alcmonavis. Our first day of digging was on friday (may 19th) at the BGM hobbysteinbruch in Solnhofen which is part of the Mörnsheim Formation (150,8 - 150 mya). https://www.solnhofen-fossilienatlas.de/siteinfo.php?section=sites&siteid=75&sitename=Solnhofen Hobbybruch The main fossils that could be found in this quarry were ammonites, aptychi, coprolites as well as fish. Our group of around 30 people assembled at the quarry at 10 o'clock and after a few words from the quarry owner and Jonathan we set of to dig. An overview of the quarry before we started digging. A couple of minutes later... Jonathan pointed me and my good friend Tom to a good place to dig and so we started cleaning debri so we could start digging. Since the Plattenkalk is layered it is always a good stategy to find some plateaus where so can hack away chunks which you can later split (which I suppose most of you already know). Pic of my hole in which I was working Unfortunately it turns out that the spot I picked must have been a public toilet as pretty much everything I found the first half of the day where coprolites, which turned into a running joke that day I was lucky enough to find a fish early one, though still entirely entombed in the rock but Jonathan warned us to look for bones into the cracked stones and that's how I managed to find it. Will require quite some prep work though. Later that day I started finding multiple Aptychi, Ammonites as well as a rare Bivalve. A plate with 3 ammonites (probably Neochetoceras steraspis) An ammonite with the Aptychus still in place which was found by one of the other members. Our club founder Luc, found this large piece of decorative slab which almost looked like it is petrified wooden dining table. Not a fossil but still cool as heck. And Tinneke managed to find a lovely fish jaw which was excavated by the help of Jonathan. While I didn't take pictures of the following, quite some members found fossil fish (some around 40 cm in lenght) and crustaceans like schrimp.
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Brittle star from the Boulonnais, upper Jurassic (Likely kimmeridgian). Does anyone know the species/genus?
Fancysaurus posted a topic in Fossil ID
I am struggling to find proper information on how to identify different brittlestar genuses, so if anyone has a good resource for that, that would be great as well! Found at place de la Crevasse near Equihen, when splitting open a fallen block of layered, clayey shale. Scale is in cm.
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Hunting trip for Sinemurian ammonites (Transcarpathian region, Ukraine)
Svetlana posted a topic in Fossil Hunting Trips
Hello to all. Some photos from a recent trip.
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From the album: My collection in progress
Gryphaea arcuata Lamarck 1801 Location: Baudrecourt, Moselle, Grand Est, France Age: 199 - 190 Mya (Sinemurian, Early Jurassic) Measurements: 6,7 cm (diameter) Kingdom: Animalia Phylum: Mollusca Subphylum: Conchifera Class: Bivalvia Subclass: Pteriomorpha Order: Ostreida Family: Gryphaeidae -
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Extinct Big Water Predator Insect, Chresmodid, in Burmite?
Biotalker posted a topic in General Fossil Discussion
Chresmodidae are a family of insects that reigned from Middle Jurassic to Late Cretaceous. They are medium to large insects with very long legs and superficially resemble extant water striders. While they were common in water environments, like Daohugou, they are exceedingly rare in land environments like burmite. They are puzzling critters, since scientists suggest it is unlikely these weighty insects had the buoyancy necessary to be water surface predators like water striders (Gerridae, Hemiptera). These are samples of Daohugou Chresmodid fossils.
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Taxonomy from Fossilworks.org. Diagnosis from Yang et al. 2012, p. 38: "Scapus 1.50 times thicker than pedicelli, pedicelli two times thicker than flagellomeres, apical flagellomere swollen; femora about two times thicker than corresponding tibiae, hind tibiae 1.46–1.57 times longer than fore and mid tibiae, first tarsomere of fore legs 1.33 times longer than second, first tarsomere of mid legs 1.50 times longer than second, first tarsomere of hind legs 2.31 times longer than second; R1 reduced, vein M+CuA about 1.57 times longer than vein R, branches of M about 2.22–2.39 times longer than M." Line drawing from Yang et al. 2012, p. 39: References: G. Yang, Y. Yao & D. Ren (2012). A new species of Protopsyllidiidae (Hemiptera, Sternorrhyncha) from the Middle Jurassic of China. Zootaxa 3274: 36–42. G. Yang, Y. Yao & D. Ren (2013). Poljanka strigosa, a new species of Protopsyllidiidae (Hemiptera, Sternorrhyncha) from the Middle Jurassic of China. Alcheringa , 125–130. ISSN 0311-5518. Drohojowska, J., Szwedo, J., Żyła, D. et al. (2020). Fossils reshape the Sternorrhyncha evolutionary tree (Insecta, Hemiptera). Sci Rep 10, 11390. https://doi.org/10.1038/s41598-020-68220-x
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Jurassic/Cretaceous fossils? (sponge/bryozoan/crinoid)
IsaacTheFossilMan posted a topic in Fossil ID
My better half has just rediscovered some of her old fossils from years ago - as such, she does not know the provenance, though based on the matrix and preservation, I believe them to be Cotswoldian in origin - Jurassic, Inferior/Greater Oolite. These two in particular absolutely had us stumped - This is number one - I originally thought disarticulated crinoid, but the 'branching' pattern in picture 2 threw me off a lot, going to bryozoans and all sorts, bouncing around til' I decided, maybe, not a fossil? But then again, it displays the glow from calcite: And, secondly: The gap between the layers suggests to me that something dissolved - a shell? Any input appreciated! Isaac.thumb.jpeg.2e28c8a974d64df8f003b5bd203d6078.jpeg)
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Taxonomy from Mindat.org. Alternative name Netropanorpodes decorosus Sun, Ren & Shih 2007. Revised diagnosis from Cao et al. (2015), p. 9: "In forewings, Sc forks with three branches; R2+3 forks after the crossvein r1–r2+3; Cu1+M forks before the crossvein cu1–cu2. In hind wings, R2+3 forks before the crossvein r1–r2." Line drawing of the left forewing from Cao et al. 2015, p. 8: References: NAN LIU, YUNYUN ZHAO & REN (2010) Two new fossil species of Itaphlebia (Mecoptera: Nannochoristidae) from Jiulongshan Formation, Inner Mongolia, China. Zootaxa 2420: 37–45. CAO, Y., SHIH, C., BASHKUEV, A. & REN, D., XX.XX.XXXX. Revision and two new species of Itaphlebia (Nannochoristidae: Mecoptera) from the Middle Jurassic of Inner Mongolia, China. Alcheringa 40, XX–XX. ISSN 0311-5518. Cao Y, Lin X, Shih C, Ren D (2022) Two new species of Itaphlebia (Insecta, Mecoptera, Nannochoristidae) from the late Middle Jurassic of China. ZooKeys 1108: 175–188. https://doi.org/10.3897/zookeys.1108.85378
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The North American Tyrannosauroidea Species from the Aptian-Santonian Cretaceous
Joseph Fossil posted a topic in General Fossil Discussion
The Tyrannosaur Dinosaurs (Tyrannosauroidea) inhabited North America from 152 Million Years ago during the Late Jurassic era up until 66 Million Years ago during the Late Cretaceous era. https://www.app.pan.pl/article/item/app20110141.html However, there is a relatively large geologic gap between the time of the Late Jurassic to the Santonian-Campanian stages of the Cretaceous (when the the oldest known Tyrannosaurid Lythronax (Late Creteaceous, 81.9-81.5 Million Years ago) emerged) in terms of the number of Tyrannosauroidae confirmed in North America. However, this doesn't mean they were completely absent from the Continent. Rather, they remained small to mid sized predators under the shadow of Large Carnosaurs up until the Cenomanian-Turnonian extinction event 93-94 Million years ago, which the tyrannosaurs filled the role of Apex Predator in most terrestrial ecosystems by the Campanian stage of the Cretaceous. The Tyrannosaur geologic gap between the Late Jurassic and Santonian Cretaceous is also not completely empty and several confirmed Tyrannosauroidea are known from this time period in North America. I've created a list of known Tyrannosauroidea species and specimens from the Aptian-Santonian Cretaceous of North America which I would like to share on the fourtm (let me know if there are any examples I'm missing or should add): Unnamed Cloverly Formation Tyrannosauroid (Tyrannosaur – Cloverly Formation, Wyoming, US, North America) (Early Cretaceous, 108 Million Years ago) (Based on Specimen FMNH PR 2750, likely grew up to 1.2 meters (3.9 feet) in length) https://www.tandfonline.com/doi/abs/10.1080/08912963.2010.543952 https://www.researchgate.net/profile/Lindsay- Zanno/publication/229287579_On_the_earliest_record_of_Cretaceous_tyrannosauroids_in_western_North_America_Implications_for_an_Early_Cretaceous_Laurasian_interchange_event/links/0fcfd50089dd8f3955000000/On-the-earliest-record-of-Cretaceous-tyrannosauroids-in-western-North-America-Implications-for-an-Early-Cretaceous-Laurasian-interchange-event.pdf Unnamed Wayan Formation Tyrannosauroid (Tyrannosaur – Wayan Formation, Idaho, US, North America) (Early Late Cretaceous, 100.6-97.8 Million Years ago) (Based on Specimen IMNH 2251/53975, grew up to 1.2 meters (3.9 feet) in length) https://bioone.org/journals/journal-of-paleontology/volume-96/issue-6/jpa.2022.42/A-partial-tyrannosauroid-femur-from-the-mid-Cretaceous-Wayan-Formation/10.1017/jpa.2022.42.full Unnamed Lewisville Formation Tyrannosauroid (Tyrannosaur - Woodbine Group Lewisville Formation, Texas US, North America) (Late Cretaceous (100-95 Million Years ago)) (Based on Specimens DMNH 2013-0701701 and SMU 77218, grew up to 2.7-4.8 meters (8.8-15 feet) in length) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8796713/ Moros intrepidus (Tyrannosaur – Cedar Mountain Formation, Utah, US, North America) (Early Cretaceous (96.4 Million Years ago)) (Grew up to 1.2 meters (3.9 feet) in length) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6385174/ Suskityrannus hazelae (Tyrannosaur – Moreno Hill Formation, New Mexico, US, North America) (Early Cretaceous, 93.5-89.3 Million Years ago) (grew up to 3 meters (9.8 feet) in length) https://www.pure.ed.ac.uk/ws/files/82474043/82473554._Brusatte._AAM.pdf -
Taxonomy from Fossilworks.org. Male scorpionfly. Species name reflects the characteristic pattern marking of the wings. Diagnosis from Soszyńska-Maj et al. 2019, p. 9: "Species differs from remaining congeneric by combination of the following characters: numerous oval-shaped small regular dark spots on the membrane all situated between veins spread evenly throughout the whole wings, more transparent areas than dark, Rs forks slightly beyond Mb forks in forewing, Rs1+2 almost twice as long and Rs3+4, basal part of M4b in forewing and M4 in hindwing strongly oblique and situated with cross-vein m-cu on one line." Line drawing from Soszyńska-Maj et al. 2019, p. 13 : References: Agnieszka Soszyńska-Maj, Wiesław Krzemiński, Katarzyna Kopeć, Yizi Cao, Ren, Wiesław Krzemiński & Katarzyna Kopeć (2019): New Middle Jurassic fossils shed light on the relationship of recent Panorpoidea (Insecta, Mecoptera), Historical Biology, DOI: 10.1080/08912963.2018.1564747
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This isn’t mine. Went with my son on a tour of a potential university in the weekend This Ammonite was in the Earth Sciences department No info other than Jurassic. I am guessing that it was collected somewhere in the U.K. It must be about 50cm across. Any ideas as to what it is
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Just come back from a fun trip to look for fossils in/around Whitby, and have a couple of finds I'm not 100% on. 1. I suspect this is a vertebra: 2. bones of some description, perhaps including some teeth? Thanks
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This was in a lot of El Mers fossils, but the Moroccan dealer was not sure what this was. It may not be anything, but just in case it's something unusual. It's about 2.6 cm (1.02 inch) in length Boulahfa, Boulemane, Morocco.
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