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I believe this is a petrified sea urchin. Or part of one. Found it on the dry frio River here in Southwest Texas. Anybody know if this species has been found yet?
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I got this in a creek bed near Uvalde, Tx and it appears to be some kind of worm. Part of one anyway. If you look closely you can see perfectly straight lines running horizontally and parallel to each other to form segments. I believe earthworms have this characteristic. Anybody know what it is?
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Hola soy nueva quisiera saber que tipo de fósil tengo es entre piedra y cristal parece azúcar caramelizada Translation: Hello, I am new. I would like to know what kind of fossil I have. It is between stone and glass, it looks like caramelized sugar
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Chiapas Amber (La Quinta Fm./Mazantic Shale, ~22.8-15 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Image of specimen from previous entry. The fracture is actually a very clean break with only a tiny portion of low-fractile material missing.© Kaegen Lau
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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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What kind of crocodile do you think it is? Alligator, Caiman, or another crocodile? The material is from the Mexican Pleistocene, I will not say location to avoid biogeographic influence
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Hi guys, Could Any one help to ID this ammonite? It Is from Baja California, México. It measure 500 x 450 mm. It weights over 60 Kg. I bought it, so i have no More data than the state, sorry... Thank you!! Regards!
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Globally distributed iridium layer preserved within the Chicxulub impact structure
Oxytropidoceras posted a topic in Fossil News
Iridium in undersea crater confirms asteroid wiped out the dinosaurs Hamish Johnston, Physics World, February 24, 2021, https://physicsworld.com/a/iridium-in-undersea-crater-confirms-asteroid-wiped-out-the-dinosaurs/ Tha paper is: Goderis, S., Sato, H., Ferrière, L, et al. 2021, Globally distributed iridium layer preserved within the Chicxulub impact structure Science Advances 24 Feb 2021: Vol. 7, no. 9, eabe3647 https://advances.sciencemag.org/content/7/9/eabe3647 There are arguments that seismic waves from the Chicxulub impact did a superfrack job on the Deccan volcanoes and magnified their eruptions. Go see; Richards, M.A., Alvarez, W., Self, S., Karlstrom, L., Renne, P.R., Manga, M., Sprain, C.J., Smit, J., Vanderkluysen, L. and Gibson, S.A., 2015. Triggering of the largest Deccan eruptions by the impact. Geological Society of America Bulletin, 127(11-12), pp.1507-1520. http://eprints.esc.cam.ac.uk/3289/1/Gibson bul gsa.pdf http://pages.uoregon.edu/leif/resources/papers/GSAB_2015_Richards.pdf https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/127/1112/1507/126064 Commentary on flood basalts and mass extinctions: Ernst, R.E. and Youbi, N., 2017. How Large Igneous Provinces affect global climate, sometimes cause mass extinctions, and represent natural markers in the geological record. Palaeogeography, palaeoclimatology, palaeoecology, 478, pp.30-52. Link, Ernst and Youbi (2017), at bottom of page at http://www.largeigneousprovinces.org/downloads http://www.largeigneousprovinces.org/sites/default/files2/Ernst and Youbi 2017 PPP.PDF https://www.sciencedirect.com/science/article/pii/S0031018217302857 Yours, Paul H.-
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- chicxulub crater
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I found this specimen along with some other fossils during a fossil hunt. This vertebra is very peculiar and unique, due to its small size, and it’s composition. It is completely permineralized by hematite, making it feel much heavier than the average rock. It almost feels like a chunk of metal. Probably belongs to one of the endemic hadrosaur species of the Cerro del Pueblo Formation, such as Velafrons coahuilensis, or Latirhinus uitstlani.
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Hello community, About 15 years ago I was in the middle of the mexican dessert with my father and found this rock and a friend of him ( that was a hobby meteor searcher) told me that that was a meteor. I think it kinda looks like a possible meteorite that melted when it entered the atmosphere? What do you think? Is it a meteorite or just some other rock/piece of melted metal? And if yes what kind? It is also important to know that it is non magnetic.
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Hi everyone, I am a double national from Mexico/Canada, and I travel occasionally between both countries. In my time here in Canada I have started a small fossil collection- three sliced ammonites, three cheap trilobites, a Crinoid plate, a 3.5 inch Megalodon tooth, a piece of ammolite and another gemstone. All of these are relatively small in the 1-3 inch range, with the exception of one of the sliced ammonites being 5 inches. I do not have a trip to Mexico planned solidly but I am considering going back eventually once COVID starts slowing down, and I will bring my fossil collection with me. I know and have read that I will likely have no trouble getting them into the plane in Canada as carry-on luggage save for a few inquisitive questions from airport security, but my big concern is once I arrive at Mexico. Customs in Mexico City can check your baggage on arrival before you exit the airport terminal. A few years ago on a return trip to there, I had brought a small dead branch that was curiously shaped like a hand, a customs officer picked it from my carry-on luggage and promptly destroyed it and put it in a trash bin. I have tried searching on the web for whether or not it is legal to bring fossils to Mexico, but the information is either inexistent, vague, or conflicting. I have read that it is illegal to bring them OUT, as all Mexican fossils are considered cultural heritage and thus cannot be removed from the country, but bringing them IN is my concern- would they get seized by customs, or even destroyed by a careless customs official who thinks these million-year-old dead animals or the soil they are found in are bad? Any help or knowledge on this subject would be appreciated. A thread here I previously found:
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I have been traveling to Mexico City for decades and have brought back some pretty incredible stuff. I met a kid who sold me some fossils over the last year or two. There was a stingray, a seahorse, and some other interesting stuff. Then a couple of weeks ago he sold me this. I attached the picture of my friend holding it for scale. He told me it was a juvenile Trex. I was skeptical. "How do I know it is real?" I asked. He replied "Because you can't light it on fire. It isn't paste". Not only do I doubt this is real but I now question all the others I have bought in the past. Can anyone tell me how I can be certain this is a fake? I appreciate everyone's time. And thanks for putting up with a newby. Rick
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Hello everyone, I saw this specimen for sale as a new species from the Vallecillo quarries. I haven’t seen something like this from this formation. Does anyone have any idea of what species might this be? The size of fossil is approximately 40 cms long. The size of the matrix is 63 cms * 43 cms. The pictures were not taken by me. Thanks everyone.
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- agua nueva formation
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Over 200 mammoths as well as camels and horses discovered at current airport construction site in Mexico: https://www.cbc.ca/news/technology/mammoth-graveyard-1.5712058
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I've read many times on the Forum that there are strict export and collection laws in Mexico because they may consider fossils to be national treasures. I have one supplier insisting the exact opposite - that there's no such law on exports nor collecting and that there was one mistaken case years ago, though that person received their fossils back when the law was made known to the Mexican authorities who confiscated them initially. Evidently there is the idea that the export of fossils is strictly mandated in Mexico. I'm not sure now where it came from. I'd like to read these laws, but for my part cannot find them. Does anyone know where I might look?
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Hey there! I need some help identifying this shark jaw that I received as a gift a few years ago. All I know about it is that it came from Isla Mujeres, Mexico. Its about 23 centimeters in width and about 8 centimeters from the top of the mouth to the bottom, my apologies for how gritty the pictures are, my phone camera is not the best.
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Playa sinkhole opens up a large cave beneath highway Explorers find 2 1/2-million-year-old sea snail fossils https://mexiconewsdaily.com/news/playa-sinkhole-opens-up-a-large-cave-beneath-highway/ https://www.voanews.com/americas/mexican-highway-sinkhole-reveals-fossil-filled-cave Yours, Paul H.
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Hello everyone, Does anyone know what it could be? ... is this Geologic or fossilized?, if it’s fossilized, what did it come from? And if so would it be a finger, or toe bone ? Found in the country of Mexico, specifically in the state of Guerrero, in a limestone mountain near some volcanic area or with tectonic plate activity, because there is quartz in the surroundings. I have never come across anything like this and around the discovery there are some pieces like these with some similar characteristics Thank you!!
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- finger
- finger toe bone
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I found this jaw bone in mexico on a beach and have no idea what it is. It’s blue which i think is especially weird. Thanks for all your help! One picture is next to my dog for size lol.
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Hello, I found this fossil last spring break, in Coahuila, Mexico. It comes from the late Campanian (73-71 Myrs) Cerro del Pueblo formation. I found several fossils at the same location where I found this fossil. Some of the fossils I found include Cerithium snails, several species of Physidae freshwater snails, Inoceramus sp., petrified wood with teredolites, ammonite fragments, a caudal vertebra from a Hadrosaurid, and plenty of dinosaur bone fragments. The formation is a mess, it’s composed of layers that were deposited in marine, and terrestrial environments, as well as rivers and possibly swamps. Even though I’m very knowledgeable of the formation, and the fossils that have been found there I still have no idea as to what this specimen is. My best guess at the moment is that it’s some type of plant material maybe a fruit or a seed. There have been numerous plant fossils found at the formation, including fruits. I also think this could be embedded in a coprolite, with the rounded object being embedded in it. Let me know what you guys think about it.
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Hello, this spring break I found this vertebra in late Campanian sediments from southern Coahuila, Mexico. It comes from the Late Campanian, Cerró del Pueblo Formation, around 73-71 million years. This was found along with marine and terrestrial fossils. It is about 1 cm long (3/8) of an inch, 1 cm in width, and 1.1 cm in height. I want to know what type of dinosaur this vertebra belonged to and whether it’s a caudal vertebra or not. My thoughts on this specimen at the moment, is that it’s probably a caudal (tail) vertebra from a small theropod dinosaur, something like a dromeosaur or a troodontid. I hope some dinosaur experts on this forum can give me more insight on this small vertebra.. Side view Other side Front view Bottom Top view
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Have amber fossils ever been compared to more conventional fossils?
gieserguy posted a topic in Questions & Answers
Hey all, I was just wondering if there has ever been a study comparing fossils of the organisms trapped in amber to similarly located/aged "conventional" rock fossils. It would certainly be interesting to see how the organisms compare between the two forms of preservation- one as a flattened impression and the other looking like it was just alive yesterday. -
I have the shown ammonite in my collection. It is from the north part of Baja Mexico.I obtained this in the early 1980's. I did not receive a label with it and would like to know the species. Also you can see it has broken. I believe it is along a natural fracture the was repaired when collected. The specimen itself has a diameter of 15". Can you recommend someone to repair?
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From the album: Vertebrates
Belonostomus non det. Early Cretaceous Tlayua Mexico-
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Mexico mammoths: Human-built woolly mammoth traps found in Tultepec, Mexico
Oxytropidoceras posted a topic in Fossil News
Mexico mammoths: Human-built woolly mammoth traps found in Tultepec BBC News, Latin America, November 6, 2019 https://www.bbc.com/news/world-latin-america-50330717 Descubren en Tultepec, Estado de México, contexto inédito de cacería y destazamiento de mamuts Instituto Nacional de Antropología e Historia (INAH), November 6, 2019 https://www.inah.gob.mx/boletines/8647-descubren-en-tultepec-estado-de-mexico-contexto-inedito-de-caceria-y-destazamiento-de-mamuts Yours, Paul H.- 3 replies
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