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Showing results for tags 'pilocene'.
Found 18 results
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Hi everyone! Pretty new to this forum but I’ve been fossil hunting for about 7 years now! Just wanted some help in this fossil identification that I found in Coalinga, California in the Central Valley! I usually find lots of fossilized bones, bivalves, oysters, and sand dollars- so I’m guessing it might be a sea creature? Or a bone? Or barnacle? I’m really not sure! Thank you ❤️❤️
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This is something I just found out yesterday, but feel is amazing enough to share on the fourm (especially to all those who study Carcharocles (Otodus) megalodon)!!! I was researching shark diversity during the late Eocene when I came across some info on a fossil Shark rostral node specimens from the Zanclean Pilocene sections of the Yorktown Formation dating around 5.3-3.6 Million Years ago in what is now North Carolina. The Specimens USNM 474994, 474995, 474996, 474997, 474998, and 474999 belongs to juvenile sharks (with USNM 474998 belonging to an individual shark of about 1.46 meters (4.8 feet) in length). Originally believed to be rostral nodes of a Lamna sp., they were reanalyzed and discovered by Scientists Dr. Frederik H. Mullen and Dr. John W.M. Jagt to be from Juvenile Otodontidae Sharks. (also, USNM = National Museum of Natural History, Washington D.C., U.S.A.) Mollen, F.H. and Jagt, J.W.M. (2012). The taxonomic value of rostral nodes of extinct sharks, with comments on previous records of the genus Lamna (Lamniformes, Lamnidae) from the Pliocene of Lee Creek Mine, North Carolina (USA). Acta Geologica Polonica, 62(1), 117–127. https://www.researchgate.net/publication/262142193_The_taxonomic_value_of_rostral_nodes_of_extinct_sharks_with_comments_on_previous_records_of_the_genus_Lamna_Lamniformes_Lamnidae_from_the_Pliocene_of_Lee_Creek_Mine_North_Carolina_USA Reconstruction by Tyler Greenfield, 2021 This research also strongly indicates/directly suggests these rostral node specimens might belong to fetal or newborn individuals of Carcharocles (Otodus) megalodon!!! If correct, it would be the one of the most significant finds in terms of non-tooth C. megalodon fossil material since the relatively recent discovery of specimen IRSNB P9893 (also known as IRSNB 3121), a pretty complete C. megalodon fossil vertebrae column from a Miocene Formation in what is now Belgium!!! Shimada, Kenshu & Bonnan, Matthew & Becker, Martin & Griffiths, Michael. (2021). Ontogenetic growth pattern of the extinct megatooth shark Otodus megalodon —implications for its reproductive biology, development, and life expectancy. Historical Biology. 33(12), 1-6. 10.1080/08912963.2020.1861608. https://par.nsf.gov/servlets/purl/10293771
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- carcharocles megalodon
- early pilocene
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Was the Yorktown Formation Otodus Megalodon's last stronghold?
Joseph Fossil posted a topic in General Fossil Discussion
I've recently read a 2020 scientific paper describing pretty accurately the multiple nurseries that Carcharocles (Otodus) megalodon had established to raise young between the Miocene-Pliocene 23-3.6 Million Years ago (not just a single nursery in what is now Panama as previously thought). Herraiz, J. L., Ribé, J., Botella, H., Martínez-Pérez, C., & Ferrón, H. G. (2020). Use of nursery areas by the extinct megatooth shark Otodus megalodon (Chondrichthyes: Lamniformes). Biology Letters, 16(11), 20200746. https://doi.org/10.1098/rsbl.2020.0746 https://royalsocietypublishing.org/doi/10.1098/rsbl.2020.0746 What I also found interesting about this paper was that the geologic latest nursery area the researchers identified is what is now the Yorktown Formation, North Carolina. Images Credit: https://royalsocietypublishing.org/doi/10.1098/rsbl.2020.0746 C. megalodon went extinct in the Mediterranean as a result of the Messinian Salinity crisis 5.59 Million Years ago. The emergence of Orcas (Orcinus) and the Great White Shark (Carcharodon carcharias), a decrease in diatom diversity during the middle miocene-pliocene, and the miocene formation of the Isthmus of Panama which changed ocean current patterns also helped caused a decline in C. megalodon's population by the Pliocene. But this 2020 paper has got me thinking about where did C. megalodon as a species make its last stand? Was the Yorktown Formation in North Carolina C. megalodon's last stronghold?
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- carcharocles megalodon
- early pliocene
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Question on the age of the Carcharocles (Otodus) megalodon fossils from Punta Médanos locality, Argentina
Joseph Fossil posted a topic in Questions & Answers
Recently I found a really interesting article rom 2021 describing fossilized specimens (in the form of teeth) of the giant shark Carcharocles (Otodus) megalodon from Buenos Aires Province, Argentina. Here is the article: De Pasqua, J., Agnolin, F., Rolando, A. M., Bogan, S., & Gambetta, D. (2021). First occurrence of the giant shark Carcharocles Megalodon (Agassiz, 1843) (Lamniformes; Otodontidae) at Buenos Aires Province, Argentina. Revista Brasileira De Paleontologia, 24(2), 141–148. https://doi.org/10.4072/rbp.2021.2.05 https://www.researchgate.net/publication/354201776_First_occurrence_of_the_giant_shark_Carcharocles_megalodon_Agassiz_1843_Lamniformes_Otodontidae_at_Buenos_Aires_Province_Argentina What really actually baffled me was the age the scientists who authored the paper assigned to the specimens. The specimen MMDA-1 was found close to the Atlantic coast in sedimentary deposits consisting of five depositional sequences (DS) dating between the Miocene and early Pleistocene eras. The authors state its possible the specimen came from DS5 or DS4, which date between the late Pilocene-early Pleistocene eras. If this is correct, this would make this incredible find even more incredible as it would represent the youngest known Carcharocles (Otodus) megaldon fossils (and no, I'm definitely not counting the HMS Challenger specimens as it's pretty much been confirmed those specimens are much much older than several thousand years old). Also, this is not potential proof C. megalodon survived into the Holocene! Though, I'm am a bit skeptical about the age give it was found in a pretty loose sedimentary deposit by the coast! What do you guys think? Do you think specimen MMDA-1 could be from the late Pilocene-early Pleistocene or do you think it could be older?- 3 replies
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- argentina
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Found this today (02.10.2022) on Hayling Beach - I thanked the ocean by taking a dip ❤️
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- 1.5in
- great white
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Hello all, I am considering buying this specimen but I know that fossil seahorses are often conflated with fossil pipe fish, which are more common and less valuable. Can anyone weigh in on the authenticity of this identification and whether or not the specimen appears to have been altered? Thanks!
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- identifiction
- italy
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Can someone help me identify this fossil? Found at York River State Park in Williamsburg, Virginia, USA near the water. It seems that fossils here are likely from the early Pilocene. It's 7"x 4" as far as size. Thank you so much for any info you may have!
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Hi everyone, Found these two on Milnerton beach, Cape Town. I’m hazarding a guess that it’s cetacea, possibly flipper phalange? I did find a paper on pliocene cetacea found about 10km further up the coast (https://www.researchgate.net/publication/331004600_Fossil_cetaceans_from_Duinefontein_Koeberg_an_early_Pliocene_site_on_the_southwestern_Cape_South_Africa). Tried to contact the author but no answer yet. I don’t know much about fossils so anything you can tell me about these would be greatly appreciated!
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Hi Again! Found this over the weekend really nice shape with full intact root. I think its actually 2 teeth stuck together. I did alot of searching, wasnt able to really find anything similar. hipparion; 3-toed horse? tapir perhaps or maybe a deer? any one reconize this? Thank you as always to the community! size is 1.25 Ince (31mm) wide and same from top to root. The teeth themselves are fully intact and small about 3/4 inch (19mm) the tooth on the left in first picture and 1/2" (12mm) on the right Hawthorn Group, Peace River Formation, Bone Valley Member which ranges from Miocene to Pliocene.
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Found washed up on beach in Isle of Palms SC outside of Charleston. Are they Megalodon or White and what Epoch are they from
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Hi there! My partner took a trip to San Francisco and I asked him to bring me back a shell(I collect shells) and he comes home with this! I'm absolutely stumped! No idea what this could be. Input?
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My son and I found two fossils. We don't have a clue what they are. Can anyone help us?
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Hi im by the red river mining sand and occasionally i find pleistocene bone fragments and i need some help identifying some of them
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Any thoughts or species for this fossil snail that I found in south central Ga, I think the deposits in this area are 35 million years and younger. This snail was busted out of a void or crack in a larger rock.
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Hi my friend gave me this last year as a joke. He noticed a picture of some small Gastropods form Florida I got from @Nimravis (maybe you may know about this Ralph ) and said he had a nice little one I could have if I had the room . I said yes please . He sent it in a massive box 24inches by 12inches . When I opened it , I found a Huge Pilocene Gastropod from California . If anybody can help with an ID I would be very grateful . thanks Bobby
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Hello esteemed experts, fellow learners and everyone else. I discovered lately, north of limassol, northwest of Amathus ancient city, 15 miles in, a 3miles by 1mile oval-ish rock formation, 300-400 ft tall, nice views villas and many nice fossils. I am gathering as much as possible, before it gets totally built over (sadly at around 60% now) So. I know what some of them are, or I could research, but why take the joy of sharing island fossils and the group learning opportunity go to waste? I have 50 or more fossils, 100eds of fragments, many concretions suspected to contain goodies, few nothings, and a lot of excitement! Any prep work needed was done with a small geometry tool with 2 needles (diabetes i thing) and custom made iron chisel, with a soft handle so that no hammer is needed. 1)big fatty 1/2 bivalve, 6x6x4cm T.B.C
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Hello I found this on one of my trips to Colorado. I see a birds head but I am not sure. Any help would greatly be appreciated.
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Any help identifying this find will be greatly appreciated. Driving me crazy! Almost 2 inches long. Very hard like bone or agate. Has horizontal growth rings? (I haven't seen these in Teeth before) Partial exterior material. Looks like enamel at tip and bottom. Could it be a Cephalopod? Found at Picnic island while hunting! Tampa FL. Thank you! -Kimberly
