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Showing results for tags 'cenomanian'.
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A distal caudal vertebra of a Spinosaurid. What's slightly unusual about this vertebra is that it's slightly more slender than most Spinosaurid caudal vertebrae, which have a more square shaped centrum as seen from the lateral side. I am currently uncertain whether this is individual variation or that it might be taxonomically significant.
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Partial right shoulder blade of a Spinosaurid. Very similar to that of the neotype skeletal reconstruction of Spinosaurus aegyptiacus. There are several large gnaw marks on the lateral side of the bone.
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Hello All I prepped this fossil today. First decent prep job so I am extremely happy I could do this. The fossil is from the Kem Kem beds and is nearly completely hollow. Before I prepped it it didn't look this hollow, so I tough it would be a vertebra. Now I think it's a skull part. I have no idea from what or from what part this is. What do you all think? It's not that big, about 10 cm. @LordTrilobite, @Troodon, @Haravex Thanks already for your help. Greetings.
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Cenomanian ammonites part 2 ; Mantelliceras saxbii and Schloenbachia varians
Manticocerasman posted a topic in Fossil Preparation
this evening part 2 of the preppwork on the ammonites we found this weekend: Next up is a Schloenbachia varians of the Cenomanian of Cap blanc Nez in France: work in progres: the end result: the 2nd one of the evening was a Mantelliceras saxbii found by Natalie from the same location: The specimen is a little compressed and I thought that the center wasn't preserved, I was wrong. Work in progres: the end result: both specimens:
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Cenomanian ammonites prepp: Mantelliceras and Hypoturrilites
Manticocerasman posted a topic in Fossil Preparation
The compressor is fixed (more or less ) so I prepped 2 of the ammonites we found this weekend. First one was the Hypoturrilites sp. : work in progress : the end result 2nd one is the Mantelliceras mantelli with inoceramus found by Natalie81 work in progress: the end result: both specimens, ready to go in the display cabinets
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Hello all At a fossil fair last sunday, I obtained a lot of Kem Kem fossils. Some look very interesting (skull parts, turtle carapace...) but I can't ID them very well since they are still covered in matrix. Now this matrix actually exists out of cristals that resemble aragonite. I have no idea how to prep these without damaging the specimens. I have about 10 specimens I want to get cleaned up, but unless this is very easy, I don't dare this. Any place where I can get these fossils prepped? Greetings Thijs
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a very windy fieldtrip in the North of France
Manticocerasman posted a topic in Fossil Hunting Trips
This Saturday Natalie and I hit the road towards the jurassic and cretaceous clifs in the North of France. This is a 2h trip from where we live, so we left early to make most of the use of the favorible tides on those beaches. the 1st stop were the Titonian deposits near Wimereux, not the most easy place to find fossils, but with patience some nice fossils can be found. Th big problem although on this trip was the wind... this made it relatively hard to search for fossils. we did manage to find a couple of jurassic ammonites, one of them was more than 30cm in diameter but needs a lot of cleaning. In the afternoon we went to the beaches at the cretaceous clifs near Calais. here again the wind gave us a hard time blowing a lot of sand in the air. Although the harsh conditions we did find a few decent cenomanian ammonites, including a nice heteromorph turrilites sp. pictures of the Titonian deposits and finds: pics of the ammonites of the cretaceous site:
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I thought I would check out a small exposure of what I think is Buda formation, I wasn't expecting much but I thought maybe I might get lucky, boy did I. The most interesting finds were two crab carapaces IDed as graptocarcinus texanus, (thanks Dan) enough talking, pictures!
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Is this a chain coral between the sutures of the ammonite Metoicoceras? About 4mm long (photo taken thru microscope). From the Cretaceous (Cenomanian) Tropic Shale in Utah.
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Burmese amber is around 99.6 mya. There are various other inclusions in this piece. Edit: According to Danilo Harms from the University of Hamburg, this is a juvenile Chernetidae member.
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Dear TFF members, Expert opinions please. Thank you, Ricardo
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Collected on C level.
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From the album: Echinodermata
2.5cm. diameter. Early Cenomanian, Late Cretaceous. From Falaise du Cap de la Heve, Normandy, France. -
Fairly recent bit of opal fossil research
The Amateur Paleontologist posted a topic in General Fossil Discussion
After learning about Weewarrasaurus, I thought it'd be nice to report the 'lesser-known' recent bit of research about the opalised fossil site Lightning Ridge (New South Wales, Australia) It's basically the most up-to-date paper dealing with the geology - including age, stratigraphy and lithology - and vertebrate paleontology. The paper provides many new details about the Griman Creek Formation (GCF), a Cenomanian (mid-Cretaceous) formation which crops out in the area around Lightning Ridge. The GCF is a formation especially known for its diverse vertebrate paleo-ecosystem; of which many species are represented by quite a few opalised fossils The paper is also rather neat as it contains a nice overview of all the vertebrate groups represented at the GCF - an overview complete with a comprehensive (and up-to-date) list of vertebrate taxa, and several nice pictures of opalised vertebrate fossils Finally, the paper also indicates that a new ornithopod genus (Fostoria) from the GCF is soon going to be published Bell, P. R., Fanti, F., Hart, L. J., Milan, L. A., Craven, S. J., Brougham, T., & Smith, E. (2018). Revised geology, age, and vertebrate diversity of the dinosaur-bearing Griman Creek Formation (Cenomanian), Lightning Ridge, New South Wales, Australia. Palaeogeography, Palaeoclimatology, Palaeoecology. Abstract: The mid-Cretaceous Griman Creek Formation (GCF), which crops out near the town of Lightning Ridge in the Surat Basin of north-central New South Wales, Australia, is noteworthy for its opalised vertebrate fauna. The fossil assemblage comprises remains of aspidorhynchid teleosts, lamniform chondrichthyans, dipnoans, chelid and possible meiolaniform turtles, leptocleidid-like and possible elasmosaurid plesiosaurians, anhanguerian pterosaurs, titanosauriform sauropods, megaraptoran theropods, ankylosaurians, several forms of non-iguano- dontian and iguanodontian ornithopods, crocodylomorphs, enantiornithine birds, and stem and true mono- tremes, making it one of the most diverse mid-Cretaceous terrestrial vertebrate faunas in Australia. A detailed stratigraphic survey of twenty subterranean opal mines provides new information on the geology, age and pa- laeoenvironment of the main fossil-bearing beds. Vertebrate remains derive from the ‘Finch Clay facies’, lat- erally-extensive but discontinuous lenses of claystone that likely accumulated relatively rapidly in near-coastal but freshwater embayments (i.e. lagoonal conditions), and probably represent a single, roughly con- temporaneous fauna. U-Pb age dating of detrital zircons extracted from a distinct layer of volcanogenic claystone immediately overlying one of the opalised fossil-bearing layers yields a maximum depositional age of 100.2–96.6 Ma. These new dates confirm an early to mid-Cenomanian age for the fauna, rather than Albian, as has been reported previously. The GCF at Lightning Ridge is therefore equivalent to the middle part of the Winton Formation (Queensland) and several million years older than the sauropod-dominated fauna at Winton. For those who want the paper, PM me your email address and I'll send it to you -Christian
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Aboral view. Collected on C level. Adoral view. Collected on C level. It is from a different specimen due to matrix on the original and was added for identification purposes.
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Scale pattern Id: Cenomanian (cretaceous reptile skin) In Burmese amber.
Amber Fluid Neutral posted a topic in Fossil ID
I need help with this scale pattern. Snake or lizard? Cenomanian cretaceous.jpg.9dae5c8b231a8a9956e41a78f501325d.jpg)
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Do you think this is a bird or reptile?
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Feather in cretaceous burmite amber? Cenomanian, Kachin State clay pits.
Amber Fluid Neutral posted a topic in Fossil ID
On the surface this looks like a feather but i don't know if there are any plants that look like this. Here are the pics. Piece extracted from the cenomanian clay pits. Dated by argon from volcanic crystals on strata to cenomanian age late cretaceous..thumb.jpg.36b627dba47f5b9f1e1579f70cfc7f25.jpg)
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Collected on D level. Matrix length: 14 cm. Test diameter: 2,5 cm. With some spines.
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- goniopygus menardi (desmarest 1825)
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Lizard tail in Cretaceous Burmese Amber Kachin State mines
Amber Fluid Neutral posted a topic in Fossil ID
Although lizards are prime material for fakers, i think this tail is authentic. It is an unusial cast fossil. Kind of like a ghost form. It seems that the tail became detached. Much like they do today. This is cenomanian age amber. From Myanmar kachin state..thumb.jpg.dd27c83303bd6933dd56b4d6e9614581.jpg)
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I need help in identifying this. Is it a mushroom in Cretaceous burmese amber? Cenomanian burmite from machine state?
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Cretaceous Scale Insect female (Cenomanian Burmite). Leftover egg sacks??
Amber Fluid Neutral posted a topic in Fossil ID
Hi, I have what seems to be a female scale insect acarii(?) that still seems to have unfertilized/ stillborn young in a couple of sacks. 2nd photo, the pebble like things in the center of the body. The first photo is the famous specimen in the earlier stage of brooding. My specimen may be a late stage one. What do you make of it?
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Mecaster lusitanicus (Loriol, 1888) *ALREADY TRADED*
ricardo posted a topic in Member-to-Member Fossil Trades
Dear TFF friends, I have those unclenead Mecaster lusitanicus (Loriol, 1888) from a XIX century classic location available for trade. I woul like humble european Pliocene Bivalvia for those or another echinoid specimen. Thank you! Mecaster lusitanicus (Loriol, 1888) C level, Cenomanian, Cretaceous. Salmanha quarry, Figueira da Foz. Regards, Ricardo
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Hello all, Like if told in a post last year, I have to make an essay for school by the end of the year. My subject is 'the paleodiversity of the Kem Kem beds' (but in dutch ofcourse). Now I have a few questions where I can't find an answer on. There might follow more question throughout the year. - Is there any Bahariasaurus species officially recorded at the Kem Kem Beds? I didn't find any paper on them from the Kem Kem so I assume they are only use commercially. Only described in the Bahariya formation in Egypt I guess? - Does anyone know what a Spinosaurus aegyptiacus premax tooth looks like? - I made a species list with all the species I found from the Ifezouane fm. and Aoufous fm. (I don't work on the Akrabou fm.). Does it looks complete or do you know any gaps? Or are there any names that are not longer used? Dinosauria: - Deltadromeus agilis - Rebbachisaurus garasbae - Carcharodontosaurus saharicus - Sauroniops pachytholus - Spinosaurus aegyptiacus - Sigilmassasaurus brevicollis - Dromaeosauridae indet. - Titanosauridae indet. - Abelisauridae indet. Crocodyliformes: - Aegisuchus witmeri - Araripesuchus rattoides - Elosuchus cherifiensis - Hamadasuchus rebouli - Kemkemia auditorei - Laganosuchus maghrebensis - Lavocatchampsa sigogneaurusselae Testudines: - Dirqadim schaefferi - Galianemys emringeri - Galianemys whitei - Hadadachelys escuilliei - Araripemys sp. Pisces: - Neoceratodus africanus - Ceratodus humei - Onchoprisits numidus - Dentilepisosteus kemkemensis - Distobatus nutiae - Calamopleurus africanus - Obaichthys africanus - Stromerichthys aethiopicus - Oniichthys falipoui - Aidachar pankowskii - cf. Bawitius sp. - Hybodontidae indet. - Mawsonia lavocati - Asteracanthus aegyptiacus - Tribodus sp. - Lissodus sp. - Serratolamna amonensis - Cretoxyrhindidae indet. - Marckgrafia lybica - Arganodus tiguidiensis - Lepidotus pankowskii - Concavotectum moroccensis - cf. Axelrodichthys - Bartschichthys sp. - Sudania sp. - Erfoudichthys rosae - Palaeonotopterus greenwoodi Pterosauria: - Alanqa saharica - Xericeps curvirostris - Siroccopteryx moroccensis - Tapejaridae indet. - Ornithocheiridae indet. - Pteranodontidae indet. - Azhdarchidae indet. - Dsungaripteroidea indet. Other: - Oumtkoutia anae - Kababisha sp. Thanks already. Thijs
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From the album: Dinosaurs & flying reptiles
Unidentified raptor fossil, likely clavicle, from kem kem, in Taouz, Morocco middle Cretaceous 100 mya
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