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Showing results for tags 'Turonian'.
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For those of you that collect material from Uzbekistan this is interesting. The attached "PAYWALLED" paper describes a very large Digit II-2 phalanx that belongs to a giant Dromaeosaurid. The article also raises questions around the recently described Ulughbegsaurus uzbekistanensis but need to read the publication if I can get my hands on it. https://www.cambridge.org/core/journals/geological-magazine/article/abs/giant-dromaeosaurid-theropod-from-the-upper-cretaceous-turonian-bissekty-formation-of-uzbekistan-and-the-status-of-ulughbegsaurus-uzbekistanensis/4543ABAB1EC19C84405EDF66A5F53124#
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- bissekty formation
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Hi TFF, Last week the GF and I went for the holy trio (geological wise ), the turonian, cenomanian and albian. It's simply amazing that in a relatively short stretch of cliffs you can find all three. Driving our way there it seemed like the UK also had some decent weather that day as it was quite visible. We first hit the turonian. On the way there you can find santonian(?) deposits which produce some nice flint urchins. I'm usually looking for big ammonites like lewesiceras or mammites. Only two small examples were found that we did not take home. In-situ weathered lewesiceras. For the good eyes amongst us, an i-situ mammites nodosoides. Unfortunately a very flat compressed example At some point a nautilus 'belly' poked out, fairly uncommon and a pleasant find. I believe it's eutrephoceras. Not much later I made a little squeak. We don't find these often here. Meanwhile the GF was very pleased finding another nautilus. Albian deposits drift off towards cenomanian and turonian plates. The next day we were welcomed with a nice rainbow. You see why they call it the 'white nose / blanc-nez'. These visible layers are cenomanian. I hoped for the gault layers (which would be on the other side of the picture) but only some ex situ albian layers were exposed. These are full of pyrite and little ammonites (anahoplites). Sometimes bigger pyrite specimens can be found like this partial beudanticeras. To my surprise something else was just waiting to be picked up. Pretty rare and well sought after. Surrounded by pyrite and ammonites. On the way back we managed to pick up a little acanthoceras. And a final picture
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- 16
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- albian
- cap blanc nez
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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Last weekend was an extended weekend and good weather forecast, that means a few field trips to the French coast for us The first trip was Friday, we got there early in the morning and planned to hunt the Turonian part of the coast. There was a lot of sand on the beaches so we didn’t find much, but quality is better than quantity and Natalie scored 2! Ptychodus teeth. I only found an ammonite that proved to be incomplete after extracting it :/ and a flint echinoid on the way back to the car. On Monday we tried our luck in the Cenomanian and Albian part of the site. Again lots of sand covering op the boulders but we did find a bit more and some really interesting specimens. The 1st interesting piece was a belemnite in the chalk, this might seen strange, but although the belemnites are common in the Albian gault clay, they are almost non-existent in the Cenomanian chalk and it was the 1st specimen I ever found in there. Not long after that It was Natalie’s turn, she found a complete irregular echinoid. The rest of the finds that day were mostly chalk ammonites, except on one spot were a little bit of gault clay was exposed on the beach were we found a nice little phosphate crab. 1st fieldtrip on Friday, early at the beach: little ptychodus 1: Ptychopdus 2: To bad for this one: A flint echinoid on our way back: Field trip on Moday: Belemnite : Neohibolites ultimus Natalie's echinoid: Tiaromma michelini The little crab in situ in the clay peeking out: All the stuff cleaned up:
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- albian
- cap-blanc-nez
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Hi TFF, The other week I went for a quick trip to the beloved chalk at Cap Blanc-Nez in France. I heard that the gault clay (albian) was exposed, since that's my main interest I had to go and see. 'Sadly' it was layer P6 (late albian) which does not provide as much ammonites as earlier layers. In my experience this layer provides quite a lot of fish remains like teeth and small vertebra. Picked up a small lamniform shark tooth. Besides a lot of bivalves (inoceramus) and gasteropods (gyrodes gaultina) there was nothing but that tooth I took home. Next time I'll make some in-situ photo's because there's tons and tons of phosphate fossils. Probably very similiar to the gault in Folkestone. On my way to the turonian there was a micraster waiting to be freed. Spotted some sutures that fooled me. I thought they went inwards to the matrix but it turned out just to be a chunk as can be seen (sutures going outwards). Rookie mistake hehe. You can also see where the living chamber starts. That's usually a weak spot to be careful for when extracting, in this case there's already a good crack forming. From not to hot, beautiful mammites nodosoides (turonian) just waiting for someone
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- albian
- cap-blanc-nez
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Hello, in my quest for jet and amber I came across this piece this week in an old mine. This is the first time that I have found a piece of good jet covered with its bark totally pyritized over several millimeters. I find the result very pleasant but I fear for its stability in the months or years to come! This dates from the Turonian and the abandoned mine is in Languedoc Roussillon in France!
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Teeth, Ammonites, and Crabs: A Day in the Upper Britton of North Texas
Aidan Campos posted a topic in Fossil Hunting Trips
On Wednesday, October 12th, I took another trip to a nearby favorite spot of mine that I found a few years ago which exposes the Sciponoceras gracile Zone, Camp Wisdom Member, Upper Britton Formation of the Eagle Ford Group here in Texas (Late Cenomanian-Early Turonian, 92-95mya), and had probably my best hunt from this site, including several different ammonites, a few shark teeth, my first Enchodus, and 26 Ferroranina dichrous crabs! First find was this very nice Yezoites delicatulus (Scaphitidae) ammonite A very worn Ptychodus sp. (Ptychodontidae) shark tooth: Sciponoceras gracile (Baculitidae) ammonite, namesake of the zone: Dead modern Procambarus steigmani — this crayfish is endemic to northeast/north central Texas: Legs of a Linuparus sp. likely L. grimmeri (Palinuridae) spiny lobster: Metoicoceras geslinianum (Acanthoceratidae) ammonite: Pair of Inoceramus capulus (Inoceramidae) bivalves: Some of the 26 total Ferroranina dichrous (Palaeocorystidae) crabs found during the day: Selenite crystals: Opuntia macrorhiza (Cactaceae), as a botanist this genus is one of my focus groups: Cameleolopha bellaplicata subsp. bellaplicata (Ostreidae) oyster occurring here as overwash from the younger Turonian Arcadia Park Formation (89-91mya) which is otherwise long since eroded away in this area: Next into some things I decided to take nice camera photos of (and consequently some of the best finds of the day) A nice tiny Cretalamna appendiculata s.l. (Otodontidae) shark tooth: My first Enchodus (Enchodontidae) fish tooth, I’m not sure which species are known from the Britton: cf. Margarites sp. (Margaritidae) gastropod, the first of this family I’ve seen in the Britton: A very beautiful Ptychodus anonymus (Ptychodontidae) shark tooth, found while crawling on the ground beneath a slope: Worthoceras vermiculus (Scaphitidae) ammonite, the nicest one I’ve collected: Natica sp. (Naticidae) gastropod, this species is extremely common in much of the Britton: Ferroranina dichrous (Palaeocorystidae) crab: My first Nannometoicoceras acceleratum (Acanthoceratidae) ammonite, fittingly tiny: Another Inoceramus capulus (Inoceramidae) bivalve: Hesperotettix speciosus (Acrididae) grasshopper: Really interesting preservation on this Ferroranina dichrous (Palaeocorystidae) crab that I had never seen before, these are almost always found in orange to dark red concretions: The total Ferroranina dichrous haul: The Nannometoicoceras acceleratum after some cleanup showing the distinctive tiny, conical umbilicus and tubercle arrangement:
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- ammonites
- britton formation
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Please identify this tooth Found in cretaceous, turonian sandy-limestone in Poland (Górka Pychowicka, Cracow). This rock is amazing, on left there's Ptychodus decurrens tooth too.
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- cracow
- cretaceous
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This tooth hails from the goulmima, the striations tell me it's pliosaur but I'm not sure. What do people here think? @pachy-pleuro-whatnot-odon
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Hi TFF, I was thinking about fossils and thought why not make a small trip report. Few weeks ago the GF and I hit the usual spot in France to hunt some Turonian goodies. Lots of sand still, makes it challenging and more exciting when you find something. Within the first 10 minutes on the beach I spotted what I believed were some sweet mammites spikes in a loose boulder on the beach. It must have been just uncovered from under the sand since the sea had done some awesome polishing already. During extraction a spike were to break, glue to the rescue! No other finds that day. Decided to rest and eat while enjoying high tide.
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- cap-blanc-nez
- france
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A few weeks ago I went back to Cap Blanc-Nez in France. The variety of fossils that can be found there (aptian,albian,cenomanian,turonian) is the reason I keep coming back. Just 30 mins on the beach together with a french buddy and already a tripmaker. A freshly eroded morrowites, barely touched by the sea. While further excavating it seems a second ammonite is below. Highlighted because it's not that easy to see. Turns out to be a small Lewesiceras, incomplete anyway. Back to the good stuff. The split went like a dream, can't get any better. Beautiful sutures too. To make the post not too long with images, i'll post a mid-prep picture as a comment. As a lot of collectors do, I hid the ammonite and went looking further. I knew a there still was a big ammonite laying around as I found one just a few weeks prior, unable to take it with me or start excavating. Was too big and chalky anyway, what a luxury problem to have. Classic picture with shoe for scale. My friend and I couldn't resist hammering around a bit, just for fun. Another friend got it out last week. Seeing the result I might have made a mistake leaving it :P Picture also in comments. On our way back we saw @Manticocerasman, seems we missed a beautiful Ptychodus. Congratz to him and the wife Afterwards we did a bit of cenomanian hunting. My friend wanted to make up for my finds and found a beautiful Mariella (rather rare with all whorls) while I enjoyed an epic sunset and managed to pick up a tooth.
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- ammonite
- cap blanc nez
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During the first part of our summer holiday we spent a few days at Cap-Blanc-Nez. The tides and weather weren’t optimal for fossil hunting and lots of tourism at the location didn’t help much either, so our finds were relatively limited. The last day however we found 1 spectacular piece. A little brown spot was reflecting light on one of the loose boulders on the beach. It was a ptychodus tooh peeking out. They are very rare there and this one allone was worth the trip. After the prep at home it only got better, the tooth was complete and of considerable size. Enjoy the pictures :
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- cap blanc nez
- france
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From the album: Post Oak Creek
These oysters are common in the creek, and support the Turonian age of the fossils. -
From the album: Post Oak Creek
These oysters are common in the creek, and support the Turonian age of the fossils. -
I acquired the tooth below a little over a year ago along with some Cretodus crassidens teeth from a Texas collector. They're from a Dallas County, Texas, site that exposes a buffer zone between the Eagle Ford and Woodbine Formations (Cenomanian-Turonian). All of the teeth were identified to me as Cretodus, and that appears to be correct for the others, but I'm pretty sure the ID on this one is incorrect. On further examination, it appears to be a cardabiodontid, though I'm not sure whether Dwardius or Cardabiodon. The slant length is just under 39 mm. @ThePhysicist @siteseer, you helped ID a previous Cardabiodon tooth that I picked up from Kansas--any thoughts on this one? @MikaelS if you see this, your expertise would of course also be much appreciated. Thanks!
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This vert was found in 91 million year old Eagle Ford strata, and while I assume it can only be fish at this point, it doesn't match any of the fish verts I compared it to ( Enchodus, Xiphactinus, Protoshyraena and Pachyrhizodus (I'm not even sure Pachyrhizodus and Protosphyraena were around in the Turonian, were they?) My thoughts below - please teach me otherwise if wrong: I don't think shark due to the thick, bony processes Not Mosasaur or Plesiosaur The placement of the processes is similar to Ichthyosaur, but that would be extremely unlikely for this time period and this vert has concentric growth rings, which to my vague knowledge, ichthyosaurs don't have So, that leaves fish - but which one?
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- eagle ford formation
- texas
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From the album: Squamates
A small tooth from a small aquatic reptile that lived during the Turonian of North TX. They are small, squat teeth with textured enamel, and possess only an indistinct distal carina (no mesial carina). -
A week ago my friend Diego (@fossilesdecapblancnez) sent me a message that he'd found a big lewesiceras peramplum (lower turonian, grand blanc nez formation). This is the ammonite in situ. He decided to leave it alone and come back with me a week later to extract it and carry it of the beach since it's huge. So that makes it yesterday. He arrived a bit early after high tide but luckily the ammonite was still there as the site is frequently collected. As you can see the pebbles moved quite a lot in a weeks time. It's good and bad, lots of erosion but also lots of boulders with potential fossils buried. I arrived a bit later. The extraction itself went quite well. The matrix wasn't too hard and it split well of the fossil. A massive 77cm (+-30.3 inches) which is relatively big for the species. It should be a female since they grew biggest. I don't know how but it seems he and I always manage to photograph our shoes/boots too Luckily she's not the fattest/thickest making the weight acceptable for my old handtruck. A good half kilometer on the beach and a steep climb of the beach and she was secured
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- cap blanc nez
- france
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Anybody can identify this Tooth? Found in cretaceous, turonian sandy-limestone in Poland (Tyniec, Cracow). I think it's a Shark Tooth, or other fish but I don't know which exactly.
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I've enjoyed many trip reports that @Manticocerasman made about the chalk cliffs at Cap Blanc-Nez that I decided to make one myself. A big tide, warm sunny weather and the summer season approaching... I only like one of those 3, a big tide The goal was to visit the albian gault layers if they were visible, but they were covered with sand. I've collected some of cenomanian fauna already thus I decided to visit the turonian boulders. Hunting in the turonian is not easy, it can be hours before you see something and everything has odd shapes that could be something. The scenery makes up for it. However, when you see something it's usually good. And that day was no different. A nice mammites nodosoides. Upon extraction it turned out way bigger (39cm / 15-ish inches) and better than expected. A good 2 kilometers to the car.. and she's safe Currently the prep is looking really promising. Went back on the beach and spotted a sweet acanthoceras rhotomagense, cenomanian in age. At some points the lower layers of the cliffs are cenomanian in age, thus making a mix of finds possible. It's unfortunate I did not take an in situ picture (the boulder itself is actually in the picture) , but you can clearly see what the sea had worn down of the ammonite which I could spot. On the way back some more lovely scenery. I wonder if the germans did collect fossils during the time they were stationed in their bunkers looking towards England. If you've enjoyed this post, please leave some feedback. Writing something strucured with pictures is surprisingly difficult
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- cap blanc nez
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Found this beauty recently in a middle turonian exposure of the Eagle Ford formation in Texas. Knowing the age, (91 million years) I'm able to rule out quite a few options, but I'm still stuck between P. anonymous, P. mammilaris, and the Ptychodus that Shawn Hamm will describe this year, which has also been found at this location. I don't think it's decurrens or marginalis, but I'm not great at Ptychodus ID yet so perhaps they're still options. It's much larger than the P. anonymous teeth I've found, and being (perhaps) a posterior or lateral file tooth, I'm unsure of how to ID mammilaris there. I know @LSCHNELLE knows the diagnostic features of Hamm's upcoming Ptychodus, thoughts? Scale bar= 1 cm
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- eagle ford
- ptychodus
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Kuji Amber (Tamagawa Fm., ~91.05-85.2 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
“Kuji Amber” Hirono, Iwate Prefecture, Japan Tamagawa Fm. (Kuji Group) ~91.05-85.2 Ma Total Weight: 1.3g Longest Specimen: 10mm Lighting: Longwave UV Entry five of ten, detailing various rare ambers from European, Asian, and North American localities. Studies on this amber, and Japanese ambers in general, are especially fascinating from a pharmaceutical point of view. In early 2012, a particular diterpenoid was extracted from Kuji amber that has been shown to possess powerful anti-allergenic properties; this compound was named “kujigamberol”, and is extracted from powdered amber using methylene hydroxide (MeOH). In the case of powdered Iwaki amber, 18.5g of amber was added to MeOH for 3 days, after which the MeOH was evaporated leaving 0.8g of solid extract; further extractions and purification were applied, leaving 1.0mg of a colorless oil. Kujigamberol can be obtained from Kuji, Iwaki, Choshi, Mizunami, and Ube ambers, but its concentration decreases proportionally to the ambers’ age (i.e., the older the amber, the lower the yield). Kuji amber is found in exposures along the inner southern half of Kuji Bay, as well as further south at Noda Bay along the coastline, just north of the mouth of the Akka River: the exposures consist of sandstones, conglomerates, and amber-bearing carbonaceous mudstone (which also contains small plant fossils); the Tamagawa Fm. is roughly 200m thick, and amber is found within the middle and upper portions. Shell fragments of freshwater turtles can also be found in a bone bed within the uppermost portion of the Formation; immediately above the bone bed is a layer of volcanic ash containing zircon grains: these have been dated to be 91 million years old. The amber of the Kuji and Noda Bays is often found washed onto the shoreline as waterworn grains; there is a more well-known deposit inland, however, where amber is mined directly from the earth. Sources: “Comparison of the Biological Activity and Constituents in Japanese Ambers”; Advances in Biological Chemistry, Issue 10; Shimizu, et. al. 2020 “A New Assemblage of Plant Mesofossils (Late Turonian–Middle Santonian; Upper Cretaceous) from the Tamagawa Formation, Kuji Group, in Northeastern Japan”; Paleontological Research, Issue 25 (2); Masamichi Takahashi, et. al. 2021 “A New Species of Aquatic Turtle (Testudines: Cryptodira: Adocidae) from the Late Cretaceous of Kuji, Iwate Prefecture, Northeast Japan, with Special References to the Geological Age of the Tamagawa Formation (Kuji Group)”; Ren Hiyama, et. al. 2021© Kaegen Lau
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Kuji Amber (Tamagawa Fm., ~91.05-85.2 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
“Kuji Amber” Hirono, Iwate Prefecture, Japan Tamagawa Fm. (Kuji Group) ~91.05-85.2 Ma Total Weight: 1.3g Longest Specimen: 10mm Lighting: 140lm LED Entry five of ten, detailing various rare ambers from European, Asian, and North American localities. Studies on this amber, and Japanese ambers in general, are especially fascinating from a pharmaceutical point of view. In early 2012, a particular diterpenoid was extracted from Kuji amber that has been shown to possess powerful anti-allergenic properties; this compound was named “kujigamberol”, and is extracted from powdered amber using methylene hydroxide (MeOH). In the case of powdered Iwaki amber, 18.5g of amber was added to MeOH for 3 days, after which the MeOH was evaporated leaving 0.8g of solid extract; further extractions and purification were applied, leaving 1.0mg of a colorless oil. Kujigamberol can be obtained from Kuji, Iwaki, Choshi, Mizunami, and Ube ambers, but its concentration decreases proportionally to the ambers’ age (i.e., the older the amber, the lower the yield). Kuji amber is found in exposures along the inner southern half of Kuji Bay, as well as further south at Noda Bay along the coastline, just north of the mouth of the Akka River: the exposures consist of sandstones, conglomerates, and amber-bearing carbonaceous mudstone (which also contains small plant fossils); the Tamagawa Fm. is roughly 200m thick, and amber is found within the middle and upper portions. Shell fragments of freshwater turtles can also be found in a bone bed within the uppermost portion of the Formation; immediately above the bone bed is a layer of volcanic ash containing zircon grains: these have been dated to be 91 million years old. The amber of the Kuji and Noda Bays is often found washed onto the shoreline as waterworn grains; there is a more well-known deposit inland, however, where amber is mined directly from the earth. Sources: “Comparison of the Biological Activity and Constituents in Japanese Ambers”; Advances in Biological Chemistry, Issue 10; Shimizu, et. al. 2020 “A New Assemblage of Plant Mesofossils (Late Turonian–Middle Santonian; Upper Cretaceous) from the Tamagawa Formation, Kuji Group, in Northeastern Japan”; Paleontological Research, Issue 25 (2); Masamichi Takahashi, et. al. 2021 “A New Species of Aquatic Turtle (Testudines: Cryptodira: Adocidae) from the Late Cretaceous of Kuji, Iwate Prefecture, Northeast Japan, with Special References to the Geological Age of the Tamagawa Formation (Kuji Group)”; Ren Hiyama, et. al. 2021© Kaegen Lau
