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Showing results for tags 'jurassic'.
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Marshosaurus bicentesimus jaw
njcreekhunter posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hey everyone, I purchased this fossil that was labeled as a Marshosaurus bicentesimus jaw from the Morrison formation in Wyoming. I wanted to get other opinions on it? Is there enough here to say it's a Marshosaurus jaw? Thanks everyone.
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Hi all, Some weeks ago, I found a site pretty rich in brachipods from the Late Pliensbachian/Early Toarcian in my area (Pedraforca Zone, SE Pyrennes) So, I made a parenthesis in my Upper Cretaceous usual issues, for a change, and I have been picking & preparing them last weeks. This site is very well studied in this paper (in French), and in fossilworks. I probably i found all the species mentioned from the site: Telothyris pyrenaica Telothyris jauberti Quadratirhynchia vasconcellosi Soaresirhynchia sp. Soaresirhynchia (Alméras, 1994) (former Stolmorhynchia) is a genus of little brachiopods first described by Alméras in a study about Portugueses Toarcian specimens, but are common in all the Iberian-Pyrenean Toarcian basin, from Portugal to South France. Unfortunately, they show great morphology diversity, and I must confess the I am not be able to distinguish one specie from another (S.bouchardi, S.flamandi, S.rustica). Maybe @ricardo could help. These are some examples: Homoeorhynchia batalleri And finally, the only Liospireferina falloti I found, though in poor condition:
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Hi everyone, Two days ago, I went to Yaxley lake in Cambridgeshire (UK) and I found a handful of ammonites and belemnites. However, buried in the Oxford Clay with those ammonites and belemnites, I found this odd looking pebble which I was not able to identify (I am only able to tell obvious ones like ammonites, belemnites, bivalve, gastropod etc...). Before I decide to throw this away, I just wanted to ask you all whether this is something worth keeping for or just another random pebble. Any help you could offer would be greatly appreciated. I can upload more pictures if you need so please let me know. Cheers, Bong
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Several Late Jurassic macrosemiids are known from the Solnhofen limestones, including at least Notagogus, Histionotus, Voelklichthys and two species of Propterus. Taxonomy from Diagnosis from Bertram 1977, p. 193: " Notagogus reaching standard length of 70 mm; mean proportions as percentage of standard length: head length 33%, trunk depth 29 %, predorsal length 41 %; dorsal fin-ray count: ant. 10-14, post. 10-11; about 34 lateral line scales, only part of their hind borders bearing prominent serrations; no free fulcra on pectoral fin, very few fringing fulcra on first dorsal fin, fringing fulcra on anal fin." Line drawing from Bartram 1977, p. 191: Identified by oilshale using Bartram 1877. References: Agassiz, L. (1843) Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel xxxii-188. Woodward, A. S. (1919) The fossil fishes of the English Wealden and Purbeck Formations, Part III. Palaeontographical Society, London 1917:105-148. Bartram, A.W.H. (1977) The Macrosemiidae, a Mesozoic family of Holostean fishes. Bulletin of the British Museum of Natural History (Geology), 29, 137-234. Gloria Arratia and Hans-Peter Schultze (2012): The macrosemiiform fish companion of the Late Jurassic theropod Juravenator from Schamhaupten, Bavaria, Germany. Fossil Record 15 (1) 2012, 5–25 / DOI 10.1002/mmng.201200001.
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Hi all, a few pics of some stained glass lamps, clocks, and panels I have been making with thinly sliced ammonites inlaid. thanks. Neil.
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Hello everyone, I found a punch of these fossils at a particular location of a layer that is believed to be from the Toarcian age. Some of them were laying freely on the ground, I just picked them up, while others of the same type where cemented into the rocks. Could you help me identify these fossils? Thanks!
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Building the Dinosaur Program- the Morrison Formation... YAY !!
fossilsonwheels posted a topic in Member Collections
It is with a good bit of giddy enthusiasm that we share our very first Jurassic dinosaur fossils. We have a start to our Morrison Formation collection and I am so excited to take these into class. This is also a proud moment because my son and I earned these fossils with our hard work. This is a gift to our program from us and a gift to the kids we want to educate. They are also big hunks of dino bone. We needed a couple of larger bones for these programs for visual flair and these fit the bill for our budget. It will be a week before they arrive but I am too excited to wait lol One of the things we learned from our first dinosaur program was that 2nd graders learn about Diplodocus when they study dinosaurs. It was a species they knew. So we purchased a partial Diplo coracoid bone. It is a 15" x 11" x 9" hunk of dinosaur bone that weighs 12 lbs. Our largest and heaviest fossil. This one will really get the attention of the kids I think and gives us a the opportunity to feature Diplo in the program We also added two partial Camarasaurus ribs that fused together during fossilization. It is 14" x 9" so it is good sized and is a great example of the geological process they are learning about. This gives us an additional Sauropod to cover in the program and lest us talk more about niches. This will be a great fossil for the kids to touch as well. We are also adding a few pounds of chunkasaurus bones. Perfect dino fossils for hands on exploration and a few special give away dino bones too. The pictures are not great, not sure why but I will upload more when they arrive. Here are the big ones.... Picture 1- Diplo coracoid Picture 2 Cam ribs
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Any idea what this might be? Looks like it maybe some sort of tooth ? Shame it's missing the tip.
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From the album: Vertebrates
Pleuropholis laevissima AGASSIZ, 1834 Late Jurassic Tithonian Painten Bavaria Germany A rare, old-fashioned looking fish -
Hi, I have found this piece in a well-known jurassic site where brachs abound (Late Pliensbachian/early Toarcian, Tenuicostatum biozone, Iberian-Pyrennes basin) My guess is genus Pleuromya. At species level, Pleuromya rotundata is mentioned in the zone, but I find nothing about it (I fear of an invalid or junior species). It looks like Pleuromya uniformis, of whitch @Ludwigia and @nala have posted some pictures.
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Day One; Locality Four Tizi N'Talghaumt Pass 19th February 2019 This pass runs through a slightly lower section of the eastern High Atlas along the course of the Ziz River which snakes its way right through to Algeria. These wonderful trees are common in the Sub Sahara, but I don't know what they are. We stopped by the altitude sign overlooking the Aoufous Oasis on the River Ziz. Whilst wifey and Abdulla admired the huge palmerie oasis, one of the largest in Morocco, Anouar and I nipped across the road to see what we could find :
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Good evening, I'd like to ask if anyone knows if it's possible to find fish fossils in jurassic mudrock. As far as I can tell, it must be exceedingly rare in Slovakia.
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References: PAUL ERIC OLSEN, AMY REED McCUNE, and KEITH STEWART THOMSON (1982) CORRELATION OF THE EARLY MESOZOIC NEWARK SUPERGROUP BY VERTEBRATES, PRINCIPALLY FISHES. American Journal of Science Vol,. 282, p. 1-44. GUIDEBOOK FOR FIELD TRIPS IN THE CONNECTICUT VALLEY REGION OF MASSACHUSETTS AND ADJACENT STATES, Vol 2, 84th ANNUAL MEETING, NEW ENGLAND INTERCOLLEGIATE GEOLOGICAL CONFERENCE, THE FIVE COLLEGES, AMHERST, MASSACHUSETTS, OCTOBER 9-10-11, 1992: 488-535.
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Day One; Locality Two AZROU February 19th 2019 A little further on in the High Atlas Mountains, at the heart of the cedar forest, lies the Berber village of Azrou, which means 'rock' in the Amazigh language of the locals. There is a huge and famous boulder just outside the town, hence the name. Many of the towns and especially villages in the mountains and the south of Morocco are populated by the Berber people rather than Arabs, so knowing a bit of Berber can really help get prices down and make the people extremely cooperative as speaking Arabic is not as impressive here as it is in the larger cities and towns elsewhere. Top Tip : A little Arabic is helpful, but a few words in Amazigh goes a long, long way. See the monkeys in the trees? Check out the Nature Photography Thread for more pics of the trees and monkeys. While wifey and the guys became acquainted with the famous Barbary Apes, actually a type of macaque monkey, I spotted the fossil shop opposite. And hurried across. The big ammonite is a man made beastie, often seen outside fossil shops to attract attention, but the quite large one near the front is real and from the local area. This is just the first of a whole row of shops set in a line running away from the road. However, the prices were very high, even with haggling and local languages, probably because this monkey area is a tourist hot spot. The local rocks seem to be Middle Jurassic and also contain some beautiful, large high-spired gastropods. Sorry, no photo, the cameras were back with the others. I managed to get some information on where to find some specimens only a ten minute walk away, so i set off into the forest, carefully avoiding large dollops of snow falling from the trees as the temperature rose. But the snow became deeper, the terrain dipped and it became impossible for me to proceed any further, so sadly, I sobbed and retreated back to the road. Caradhras had defeated him.
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Our Moroccan trip from 19th-23rd February 2019. Day One; Locality One IFRANE Here we are near Ifrane, a village built by the French in the 1930's in a Swiss chalet style so there are pointy roofs instead of the usual traditional flat roofs of Moroccan buildings. This is wifey and Anouar, a Moroccan tour guide, old friend and one time student of English, his brother, our driver Abdullah, is taking the photo. Anouar paid for the trip, accommodation and food in return for me teaching him a little about the fossils, crystals and minerals that we encountered. The trip was mainly an exploratory voyage for me to discover where was worth revisiting when i was alone and had more time to spare. Somewhere in this area are outcrops of Pleinsbachian (stage of the Liassic/ Lower Jurassic) rocks that are stuffed with terebratulid brachiopods including more than a dozen species and subspecies that were first described from this locality, many unique to the site. Unfortunately, it's well off the beaten track, but I think i know roughly where now, so will return another day. Not time today! The area is covered in loose rocks, ploughed up in fields and roadbuilding, eroded from outliers or washed into the area in the autumn rainy season floods or spring melts. The ones behind us look Middle Jurassic to me, yellowish limestones, some with iron staining. Upper Jurassic and Cretaceous rocks are also in the region. The high ridges in the background are basalt intrusions as the Atlas mountains were formed as Africa began to collide with Europe throughout the Palaoegene and Neogene and this resulted in a lot of volcanoes. We moved on north of the village and stopped where we saw a group of the local fossil huts. These are all year round businesses, but in the season, from May til October you will find little stalls selling local fossils and minerals all the way along the route through the Atlas Mountains to the Sahara. But the temporary stalls are all closed at this time of year, as it's pretty chilly and there are few tourists. Top Tip : Always pop into a couple of different shops and check out prices. Tell the next shopkeeper how much the previous one had stated and see if they'll undercut for a similar item. Always, always haggle! Top Tip : Ask which fossils and crystals are local if you don't know already; most of the shops in Morocco have local fossils and others from all over the country. Local fossils will usually be much cheaper, wait until you get nearer to the localities of other fossils and see the prices come down! Top Tip : If you have the time, ask the purveyors of local fossils to show you where they came from. Then go and have a look. They don't mind this at all.
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This was also found near Herznach in Switzerland and according to my lexicon, it could be a Jurassic Holectypus, am I correct? Greetings!
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Recently I wasnt very active here but I managed to find a couple fossils in the meanwhile. A week ago I planned to visit the Pliensbach near Holzmaden in Germany. The Pliensbach is a type locality for the so called Pliensbachium, a time period in the lower Jurassic. On the way I saw an old pile with some jurassic rocks and stopped there. Luckily I was able to find some fossils there! Here is a picture of the view I had on the top of the pile: Belemnites are very common there but I found two really nice and big ones. Both are about 15 cm long and they seem to be Acrocoelites(?) ( @TqB ). They are one of my best belemnites until! I also found remains of a very rare layer with many sea urchins and sea urchin spines in it. Too bad I wasnt able to find some urchins but I found some cool plates with many spines. At the top of the pile I found some ammonites from the Sinemurian. I like the pyrite on them! The one I am holding is probably an Oxynoticeras and the other one is a Gagaticeras: Here is an overview: And one more detailed picture: Finally I found a piece of Loligosepia aalensis (vampyromorpha) and some fish rests. Here is a picture of the vampyromorpha: Alter my visit at the pile I was at the Pliensbach for a short time but I didn't really found something I can show. Maybe I will post one or two pictures tomorrow. Thanks for watching
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Here I have a few hash plates littered with ostracods all over their surfaces, they don't show up great on camera but I will also include a closeup shot of the surface. They were all found by me here in the Jurassic shales of Connecticut. I have way too many to keep even from just one batch of matrix but feel bad throwing them away. I am not looking for anything in particular just seeing if people would be interested, Thank you all, Misha.
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Hi again Is this a (Jurassic) Gastropod? If yes, is it closer determinable? It was found near Herznach in Switzerland.
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From the album: Triassic In Situ Pictures
Psiloceras naumanni, from the Hettangian of the Alps -
Hi friends ,can you help me with this ,I went to jubaila formation area (jurassic) to the north of Riyadh and found an ammonite , it is large, thick (4 cm) ,24 cm wide ,it was a surface find . is it Perisphinctes Jubailensis ? or other sp.
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Hey, I posted my trip to California from Washington yesterday. I have now looked through my rocks and noticed that one of these rocks are different from the rest. I took a picture of the Buchia Bivalve in the first image, to show that it has a different shape and markings than the bivalves I found there. If anyone can give me a genus that would be great. Is this another shell or something more? Thanks guys
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Lit.: Polz, Hermann (1994) Mayrocaris bucculata gen. nov. sp. nov. (Thylacocephala, Conchyliocarida) aus den Solnhofener Plattenkalken. Archaeopteryx, 12: 35-44 Haug et al. (2014) The implications of a Silurian and other thylacocephalan crustaceans for the functional morphology and systematic affinities of the group. BMC Evolutionary Biology 2014, 14 :159http://www.biomedcentral.com/1471-2148/14/1/159
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A warm hello to all. I’m afraid I’m a very unknowledable beginner, but making every effort to learn and hoping for some friendly help. I have just discovered I live very close to the Jurassic Coastline of Yorkshire in the Uk! Never before did I realise you can find such a gigantuous array of delights here. It was only a few weeks ago this took my interest and I wanted to find an ammonite of my very own. Then it gets addictive and now I want to know more. I have found a selection of rocks with bits and bobs in them, ammonites, and possibly an Ichthyosaur vertebrae. I am here to ask lots of questions about extraction to identification to preserving. Any links and book suggestions would be most welcome. Thanks so much to all!
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I mentioned in a recent post that I was heading off into the field, or in this case the woods, again. It's getting to be a habit with me that I don't think to take my camera until it's to late, so, true to form, I forgot it again. This is why I've titled this with "Crate", since that's all I have to show for the trip to begin with. My plan was to go to my favorite Callovian site in order to finally fulfill my recurring dream of a large, well-preserved Bullatimorphites and/or Cadoceras ammonite. I always drive down to the end of a forestry road and park the car under the trees before I mosey off to the site, but this time it didn't quite pan out. The farther on I drove into the woods, the more the snow and ice had accumulated, so when I turned around and reversed into my parking spot, I noticed for the first time that I had to drive slightly uphill in order to complete the maneuver. Problem was that I couldn't, since the wheels were running on the spot and digging deeper into the quagmire every second. My head became immediately filled with visions of walking the 5 kilometers back to the next village in search of a tow truck or a frendly farmer, but after I'd settled down a bit, I decided that the best thing would be to get out of the car and assess the situation first. Fortunately, being a serious fossil collector, I always have a plethora of tools of all sorts in the trunk, so I selected my trusty pickaxe and spent the next half hour shaving the 5-inch layer of ice, mud and decaying leaves down to the gravel roadbed. Then, easing off in second gear, I managed to get back to dry land, so to speak. Thank goodness! It was at this point that I also decided that since I hadn't brought along my downhill skis, I would forgo slipping and sliding to a site which is more than likely still buried under a foot of snow. Fortunately this area has a good number of sites to chose from, so after a bit of driving around, I managed to find one on the hills of the Scheffheu which is pretty well free of snow and spent the rest of the day exploring and chipping out the odd fossil. This time it's a selection from the Aalenian and Bajocian of ammos and bivaves along with one belemnite, all of which need a good bit of prep.
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