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Found 61 results

  1. Theropod caudal vertebra?

    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
  2. 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.
  3. Ammonite Unknow Species

    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?
  4. Belonostomus non det.

    From the album Vertebrates

    Belonostomus non det. Early Cretaceous Tlayua Mexico
  5. 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.
  6. Fossil fish or marine reptile?

    This fossil was found last week by a worker of the quarry. I haven’t seen this kind of fossil before and is definitely an uncommon one around here. The fossil is not in a really good condition. I’ll post two pictures hoping I can find some help from you guys. The largest teeth are almost 1 inch long. Thanks a lot!
  7. Megalodon hunting in Baja California

    Giant sharks south of Ensenada American fossil hunter returns his finds to Baja By Daniel Powell, San Diego Reader, Sept. 11, 2019 https://www.sandiegoreader.com/news/2019/sep/11/feature-giant-sharks-south-ensenada/ Yours, Paul H.
  8. Hello, I recently acquired some fossils from the Vallecillo member of the Agua Nueva formation. The Agua Nueva Lagerstätten is famous for its perfectly preserved fish and marine reptiles. It is late cenomanian in age about 90-93 million years old. I got two large ammonites from one of my trips to Mexico. I was wondering if someone can identify it to the family, and possibly the genus level. They are preserved in a finely bedded shale. This one one is the largest one it is about 8 inches long.
  9. ID for this shark

    Hi there! This is my first post at Fossil Forum, hope this information could help in getting some help to identify this fossil. It was found at a quarry in Vallecillo, Mexico (northeast part, less than 100 kms from Laredo, Texas). The fossils found here belong to the the Vallecillo member from the Agua Nueva formation, aparently from late Cenomanian to early Turonian. The full length including the separate vertebrae is aproximately 29 inches or 74 centimeters. The longest tooth is aproximately 1.4 centimeters long. I was only able to post a single picture, hope it helps.
  10. Interesting article. This cave seems to be loaded with history making fossils. https://www.foxnews.com/science/ice-age-bear-and-wolf-like-creature-found-in-underwater-mexican-cave
  11. Mexico Meg Teeth

    Has anyone seen Meg teeth from Mexico? I'm currently working in Mexico and one of my coworkers is trying to sell me a big Meg tooth that looks very similar to the North Carolina teeth.
  12. Found Giant Oyster?

    Hi, I found this giant oyster in the Mexican Golf. It weights around 13kgs. I found this article about something similar, where they did a MRI on the oyster. - https://www.dailymail.co.uk/sciencetech/article-2154813/amp/The-100-million-year-old-oyster-times-normal-size-undergo-MRI-scan-contains-worlds-biggest-pearl.html and here the same story with more details, but in spanish - https://insolitonoticias.com/ostra-fosil-de-145-millones-de-anos-podria-contener-una-perla-gigante/ Cheers.
  13. Encope borealis (A.H.Clark 1946)

    From the album Echinodermata

    9cm. Sand dollar. I'm assuming that this comes from Pleistocene layers somewhere in Mexico. The seller had no idea, but fortunately the friends here in the forum did.
  14. Encope grandis (Agassiz 1841)

    From the album Echinodermata

    9.5cm. Sand dollar. I'm assuming that this comes from Pleistocene layers somewhere in Mexico. The seller had no idea, but fortunately the friends here in the forum did.
  15. Mellitella stokesi (Agassiz 1841)

    From the album Echinodermata

    9.5cm. Sand dollar. I'm assuming that this comes from Pleistocene layers somewhere in Mexico. The seller had no idea, but fortunately the friends here in the forum did.
  16. my son found this at a beach while we were vacationing in Riveria Maya Mexico. we all think it looks like a tooth but it feels like a rock. it's about 4 - 5 inches long (about 12cm). here are the pictures.
  17. Help to ID

  18. Help to ID

  19. Help to ID

  20. Help to ID

  21. Help to ID

  22. Help to ID

  23. Help to ID

  24. Help to ID

    Friends, this time I seek the help of a connoisseur of fossil corals, they are from the Neocomiano (Lower Cretaceous), from a town near Tehuacán, in the State of Puebla (Mexico). The scale is in centimeters. I appreciate your help because although I have dedicated myself to reading the scientific literature of the area, I am an amateur, and many of them are very similar. Of those who have an idea, I put their name for them to say. regards
  25. Stalactite

    I purchased this in Mexico legally many years ago. It was brought back through customs and inspected. Is this a stalactite and is there anyway to know it’s approximate age? Thank you.
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