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Showing results for tags 'albian'.
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From the album: Cretaceous Shark Teeth
Undescribed shark from Toolebuc Formation, Australia. Albian in age. This tooth possesses folds along the enamel on both sides of the tooth (hard to see in photos), resembling those on Cretodus. -
From the album: Cretaceous Shark Teeth
Undescribed shark species from Toolebuc Formation, Australia. Albian in age. -
From the album: Cretaceous Shark Teeth
Undescribed sp. from Toolebuc Formation, Australia. Albian in age. -
From the album: Cretaceous Shark Teeth
Undescribed species of shark from Toolebuc Formation, Australia. The central fold in the root and shape reminds me of Dallasiella sp. ? -
From the album: Cretaceous Shark Teeth
Undescribed species of shark from Toolebuc Formation, Australia. The central fold in the root and shape reminds me of Dallasiella?. -
From the album: Texas Echinoids, ERose
Probably the best specimen I personally ever found of this elusive species. NOTE: I have since found a complete specimen!-
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My first Metengonoceras dumbli ammonite at the Walnut formation. Although not complete, I've been searching this species of ammonite for many years. Plenty of Oxy's, but never ever found this one. This one measures around 4.5 inches / 114.3 mm.
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I'm visiting family in San Antonio, Texas, and have been doing a little fossil hunting as well, including in a nearby creek. Based on a local geologic map, I believe this creek mostly exposes the Edwards Group (Albian age), though there appear to be some younger (Cenomanian age) rocks from the Del Rio Formation mixed in as well, based on an Ilymatogyra arietina shell that I found a couple of days ago. This creek isn't very fossiliferous. In about 3 hours of searching, I've only found a single I. arietina and a few small shell impressions in rocks. However, today, I also found the rock below and am wondering if it's something more. I am moderately confident that the bit in the lower right is a shell impression. What I'm unsure of is whether there's a bigger (worn) shell mold here too or just a bit of pareidolia. Any thoughts? Here's the outline of what I'm seeing -- the dimensions of what I've outlined are approximately 7cm wide x 6cm tall. Here's further detail of the part in the lower right that I'm more confident is part of a fossil shell/shell impression: The "shell mold" is raised relative to the surrounding rock, though is pretty heavily eroded if it is a fossil: Here as well is the I. arietina I found -- no doubt that this one's a fossil at least! And here's a wider shot of the creek: Thanks for looking!
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Fossil hunting trip to Cap Blanc Nez (Cretaceous of France)
ziggycardon posted a topic in Fossil Hunting Trips
Hi everyone, Last week after getting lots of recommendations from people I spend a couple of days at Cap Blanc Nez in France to look for some fossils. And while it wasn't to most bountyfull hunt I did have a lot of fun and I was very pleased with the little finds that I managed to do. We had very nice weather, it was sunny and the temperature was just perfect for fossil hunting, and the cliffs and beach (and landscape overall) were absolutely stunning. The fossils in Cap Blanc Nez date back to the Cretaceous and there are deposits from the Turonian, Cenomanian & Albian. I spent a lot of time searching in the clay deposits which lay on the beach. Besides fossils we also found some washed up marine life: A large jellyfish (Rhizostoma sp.) A washed up Harbor Porpoise (Phocoena phocoena) A washed up Small-spotted catshark (Scyliorhinus canicula) We also payed a little visit to the beach at Wissant although we didn't went there to search for fossils but to visit an old shipwreck -
While I was sorting through my collection of croc fossils, I came across these Elrhaz Formation teeth I bought 6 months ago and never did figure out what they were. I assume they are croc and not some kind of fish, though I could be wrong. I've never seen these apart from the one source I purchased them from. I've been told they were Sarcosuchus, then Kaprosuchus, then Suchomimus. Pretty sure it's not Sarcosuchus, and the images I can find of Kaprosuchus don't seem to match. Suchomimus, I don't know, but my gut feeling is, no, I've seen dozens of Suchomimus and fake-Sucho crocs, and never found a match. If anyone is familiar with this morphology, any input is appreciated. Locale: Gaoufaoua, Tenere Desert, Niger Last picture is a couple of other crocs from the same lot. One (the robust one on the right) is probably Sarcosuchus.
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From the album: Lower Cretaceous Vertebrate Fossils of Central Texas
Another view of this almost (I keep looking for the missing segment) complete bone.© ERose 2021
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From the album: Lower Cretaceous Vertebrate Fossils of Central Texas
Close up of the leg bone from the Upper Member of the Glen Rose Formation© ERose 2021
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From the album: Lower Cretaceous Vertebrate Fossils of Central Texas
Another image of this fragment of turtle bone from the Upper Member of the Glen Rose Formation (Albian) of Blanco County, Texas© ERose 2021
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From the album: Prae's Collection (REMPC)
REMPC-C0039 Aioloceras besairiei (polished) Cretaceous, Albian Boeny Region, Southwest of Mahajunga, Madagascar-
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From the album: Prae's Collection (REMPC)
REMPC-C0036 Aioloceras besairiei Cretaceous, Albian Boeny Region, Southwest of Mahajunga, Madagascar-
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Ceratostreon texanum (uppper and lower valve) Pic 4
Creek - Don posted a gallery image in Member Collections
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Ceratostreon texanum (uppper and lower valve) Pic 1
Creek - Don posted a gallery image in Member Collections
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Hi guys, weird question here, I have done some digging but I can’t for the life of me find any decent references to this shark. I guess this is what happens when you fall into the trap of taxonomic collecting lol I’ve been looking at otodus recently and seeing as paleogenotodus is synonymous, it caught my attention. Last question, I wonder if anyone on this forum has actually seen a fossil of this shark? Anyway thanks for your help Also while we’re on the subject of otodus, does anyone have any info or examples of O.limhammensis or O. Poseidoni, thanks again
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Hi everyone! Found these two specimens in the Upper Albian Burim formation in Ukraine. Would appreciate any help with ID! 1. So this 1.2 cm tooth is as basic as they get - no carinae, no enamel ornamentation (enamel is there by the way), circular cross section and this really weird apical twist. When I found it in the sieve I thought it was a Polycotylid plesiosaur, but lack of striations is not typical of plesiosaurs. Can't find a large fish without carinae either (Icthyodectids, Enchodontids, Protosphyraena, Pachyrhizodus and other pachycormids all have carinae), although enamel is quite thick and definitely looks more reptilian. Crocs also have carinae. Apparently, Ctenochasmatid pterosaurs can have all of these features, but this tooth is quite robust for a pterosaur. I am confused... For comparison, other stuff from this locality left to right: Icthyodectid, Protosphyraena, Enchodus, Platypterygiine ichthyosaur, Polycotylid, Elasmosaurid tooth tip and Ornitocheiroid pterosaur 2. Well, for this one I am pretty sure it is a teleost of some kind. At first I thought it is a very worn tooth in a jaw section, but the overall shape is inconsistent with fish jaw bones. It seems relatively complete, so it would be great if there is anything diagnostic. (6 cm) @pachy-pleuro-whatnot-odon @Mike from North Queensland @ anyone else
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Quote from Ebert 2014, p. 16-17: “The genus Belonostomus Agassiz, 1834b is one of four genera of the extinct family Aspidorhynchidae Nicholson & Lydekker 1889. The other three are the type genus Aspidorhynchus Agassiz, 1833 from mid to late Jurassic marine deposits of the Tethys (Cuba, France, Germany, Great Britain), Vinctifer Jordan, 1919 from Cretaceous marine deposits of the Gondwana coasts (Antarctica, Argentina, Australia, Brazil, Columbia, Equatorial Guinea, Mexico and Venezuela) and Richmondichthys Bartholomai, 2004 from marine deposits of the Cretaceous (Albian) of Queensland (Australia). The genus Belonostomus is widespread, ranging from the late Jurassic (Kimmeridgian to Tithonian of England, France and Germany) to the Cretaceous (England, Germany, Italy, Lebanon, North and South America) and maybe even up to the Paleocene…” Diagnosis of the genus (amended from Brito 1997 in Ebert 2014, p. 22): "A very slender and elongated Aspidorhynchidae, with a maximum depth (MD) of about 6-9% of standard length (SL). The cranium is also slender and elongate with both jaws of great length. The main characteristic feature is an elongated predentary, which is nearly as long as the dentary. A supramaxilla does not exist. The maxilla is pointed at the ends with a laterally expanded lamella at the dorsal border. Ganoin on the scales is present. There are three dorsoventrally elongated flank scales in the middle of the body, of which the median one is the lateral line scale, which is two to three times higher than long. All fins are reduced in size and have fewer rays than in other members of Aspidorhynchidae." Brito (1997, p. 743-744) mentions a new species of the genus Belonostomus (Belonostomus sp. " 3 ") from the quarry Tlayúa without giving an official name. Identified as Belonostomus sp. by oilshale using Brito, 1997. References: Agassiz L. (1834) Abgerissene Bemerkungen über fossile Fische.- Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde, pp. 379-390. Brito P. M. (1997) Révision des Aspidorhynchidae (Pisces, Actinopterygii) du Mésozoïque : ostéologie, relations phylogénétiques, données environnementales et biogéographiques. Geodiversitas 19 (4): 681-772. g1997n4a2.pdf (mnhn.fr) Espinosa-Arrubarrena, L. and Alvarado-Ortega, J. (2010) Field trip to the Tlayúa quarry. Gonzalez-Rodriguez, K. and Arratia, G. (eds.), Fifth International Meeting of Mesozoic Fishes-Global Diversity and Evolution. Abstract Book & Field Guides. Pachua, Cinecia al Dia, 19:93-113. Ebert, Martin (2014) The genus Belonostomus Agassiz, 1834 (Neopterygii, Aspidorhynchiformes) in the late Jurassic of the Solnhofen Archipelago, with a focus on Belonostomus kochii Münster, 1836 from Ettling (Germany). Archaeopteryx 32: 15-43; Eichstätt.
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From the album: Albian vertebrates of Ukraine
Partial ichthyosaur tooth, supposedly Platypterygius (however now it is a wastebasket taxon)- 3 comments
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