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Showing results for tags 'eocene'.
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Hi everyone! I recently acquired some dolphin & shark teeth, but they weren't ID'd so I was wondering if some of you might be able to help me out if possible. The first are a set of small dolphin teeth found in Hoevenen, Antwerp in Belgium (Miocene, 15 - 10 mya) And I was wondering if they could be ID'd to down to genus? I've read Eurhinodelphis is a common find and that there are quite a few more named and unnamed species to be found there. The other fossils that I hoped to be ID'd are 5 tiny shark teeth from Oosterzele (Lede formation), Belgium (Eocenen, Lutetian, approx. 44 million years old) I've searched this website as they has a database with I believe all the species found there, but I am not confident and skilled enough to ID them properly. http://users.skynet.be/belgiansharkteeth/Lede formation/Oosterzele set.html My best guesses are that the first 3 teeth belong to the same species and the most common at Oosterzele, which are worn down Otodus auriculatus teeth. As for the other teeth I don't really know, so I really would appreciate some help and input. Thanks in advance!
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From the album: Vertebrates
Amphiplaga brachyptera COPE, 1877 Middle Eocene Kemmerer Wyoming USA Length 8cm -
Acquired 5/14/2019 Image © David Kn.
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Thought I would add a few pics of a nice ric I found Friday. From an eastern North Carolina quarry. Eocene Castle Hayne Formation, Spring Garden Member. Whether you call it Otodus or Carcharocles auriculatus, they are always a pleasure to find. 2.58 inches
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Looking for Chama calcarata and Chama lamellosa
Kasia posted a topic in Member-to-Member Fossil Trades
Dear TFF Members, I would like to ask, if anyone has some specimens of Chama calcarata (punctata) and Chama lamellosa he/ she could trade? Please PM me if you want to discuss such trade. Thanks. -
Hi friends ,can you help me with this ,I went to Khrase city, Eocene area , to the east of Riyadh and found ++ tooth like fossils it was a surface find , it is 15 mm long ,10 mm high and 2 mm thick , the edge is sharp shiny . so what could it be ,
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With 13cm SL a relatively small Atractosteus - the average length is probably about 26cm. Adult specimens exceed 60cm in length. Invalid names: Atractosteus strausi and A. kinkelini Quote from Grande, 2010: "In a redescription of the species of Atractosteus from Messel, Gaudant (2005) correctly noted that the name A. strausi (Kinkelin), 1884, based on an isolated ganoid scale "devoid of any diagnostic character" found in Miocene deposits of Frankfurt-Niederrad, cannot be applied to either of the Messel gar species because the name is inapplicable and a nomen dubium (he used nomen vanum but the International Code does not recognize this sometimes ambiguously defined term, so I follow Chorn and Whetstone (1978) and others in using nomen dubium). Gaudant (2005) offered a replacement name for A. strausi (A. kinkelini) but unfortunately, he did not clearly designate a validly diagnosable holotype for the new name. He instead chose a skull fragment (SMF P. 1676, consisting of several lacrimomaxillae and a partial dentary) to serve as a "Lectotype" (p. 131) for A. strausi, and holotype (caption for fig. 2, p. 112) for A. kinkelini. He stated that the "[reduced number of infraorbitals]" is the diagnostic feature of this specimen, but the specimen is missing its anterior end making a complete count of lacrimomaxillary bones (his "infraorbitals") impossible. The count of lacrimomaxillary bones in the Messel Atractosteus also falls completely within the ranges of A. spatula, A. tristoechus and A. simplex (Table 181). Therefore, this species is not differentiated with an applicable diagnosis. Also, the fragmentary type, like the Kinkelin scale, is "devoid of any diagnostic character." Therefore a new name is erected here for the Messel Atractosteus (Atractosteus messelensis sp. nov.) with a unique combination of characters to diagnose it and a nearly complete specimen as holotype." References: Grande, L. (2010) An empirical synthetic pattern study of gars (Lepisosteiformes) and closely related species, based mostly on skeletal anatomy. The resurrection of Holostei. American Society of Ichthyologists and Herpetologists, Copeia, Special Publication 6, Supplementary Issue, 10(2A):1-871
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My younger son Mel just led his first fossil trip of the year on our Eocene/Oligocene M&M Ranch in Nebraska last week. My sons, Mel and Marco Jr., are starting to get back from their prepper some of the fossils that they found on our ranch in 2018. Not all fossils go to the prepper. Mel preps some of the specimens himself. Below is a picture of the specimens Mel found in 2018 that he will prep. Here are a few pictures of 2018 specimens just back from the prepper. Mel found another saber cat in 2018 that is in prep. Below are a saber cat skull found by Mel and saber cat skeleton found by Marco Jr. in previous years on the ranch. They have found seven or eight so far on the ranch. I'll probably be going out to the ranch a couple of times this year. However, I spend most of my time at the ranch taking matrix that contains micro squamate, bird, amphibian, and mammal specimens. I'm currently working with seven researchers on this micro material. Marco Sr.
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I usually don’t post a single tooth, but the rarity and colors of this Palaeorhincodon tooth make it worthwhile to post. The tooth came from Eocene matrix from Virginia that I collected a few weeks ago from what I call a “funky” layer. This layer is very hard and contains lots of minerals. The minerals were probably introduced by groundwater seepage eons ago. Most teeth in this layer can have really funky enamel but a few have decent enamel and great colors like this tooth. I usually don’t take this layer because of the funky teeth but a little of it got mixed in with the good layer that I normally take. This tooth is blue, white and black with golden pyrite (fool’s gold) on the root. I believe the tooth is a Palaeorhincodon daouii. Pictures of a 53 million year old tooth (3.5 mm): For comparison below are pictures of an extant Rhincodon typus (Whale Shark) (4 mm) tooth: Although there are a number of differences in the features of the two teeth, the most obvious is the strong cusplets on the Palaeorhincodon. Marco Sr.
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Hi friends ,can you help me with this ,I went to Khrase city, Eocene area , to the east of Riyadh and found ++ tooth like fossils it was a surface find , it is 21 mm long ,9mm high and 2 mm thick , the edge is sharp shiny and serrated . so what could it be ,
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Hi friends ,can you help me with this ,I went to Khrase city, Eocene area , to the east of Riyadh and found a jaw like fossils it was a surface find , it is 13 mm long , 2 mm thick with 4 tooth like coming from one side , so what could it be , is it a fish jaw or other sp.
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Hello everyone, I have been getting very interested in collecting amber, mainly Baltic amber and am planning to expand the collection I already have, but I would like to know how I could protect/ preserve it as I feared that with time it will oxidize, craze or be damaged from other processes I may not know of. So does anyone know of what I could do to protect my amber? Any insight is appreciated, Thank you.
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Hi friends ,can you help me with this ,I went to Khrase city, Eocene area , to the east of Riyadh and found spine like fossils it was a surface find i thought it was sting ray barb but a friend told me it could be sea urchin spins?????? , so what it is
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Last Friday , I drove to Tallahassee to participate in the Florida Paleontology Society Spring meeting. Some of my fossil hunting friends but NOT my wife, questioned my Sanity. But I thoroughly enjoyed hunting an Eocene quarry in South Georgia on Saturday. I even found a few shark teeth, hemipristis upper and lower, a colorful Mako and a Shrimp burrow, a Chesapecten, and a druzy oyster. It was a lot of fun but I definitely got my exercise. The shell stayed where it was attached to a 100 plus pound rock. Returned home on Sunday... The trip is about 7 hours for me. and then went to the Peace River Monday and Tuesday because my wife is traveling for the next week and I can not go hunting until she returns. But I did get a present yesterday!!!! This is my 4th complete mastodon tooth in 11 years.. A great feeling. It shows how rare finding one is, when compared to the intensive hunting that I do.. I always feel blessed, this time included. I research every key find: http://floridapaleosociety.com/wp-content/uploads/2012/02/Fossil-Species-of-Florida-1-2002-Mammut-Americanum.pdf By size, this fossil tooth is a M1 molar, and an upper cheek tooth based on the axis alignment at right angles to the Lopfs. Like I said, it was a busy week.
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Eocene lignitized seeds/fruits from Virginia
MarcoSr posted a topic in Partners in Paleontology - Member Contributions to Science
I just sent the below Eocene lignitized seeds/fruits from Virginia to a paleo botanist at the Smithsonian Institution, who will use a new CT scanner that makes this material vastly more interpretable than before, to study them. Since these seeds/fruits are not mineralized like petrified wood they should have been stored in Glycerin with a bit of thymol, which is an anti fungal agent, rather than in gem jar cups. You can see the discoloration of some of the foam from deterioration of the seeds/fruits over the 15 to 20 years that most of them were stored. I hope that they are still useful. I wish I knew about the proper storage years ago. Some of the specimens show very little deterioration which makes me believe that they are modern contaminants. Marco Sr.
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This was found in Washington State around the Seattle Area. This formation has been dated at 40 million years old and considered Near Shore sediments. I have found a fish tooth and a shark tooth in this same spot, however the tooth I found today seems to have traits of both. It also has more detail so I hope that could help in identification. The tooth is about half an inch long or 1.27 centimeters long. or 12 MM It takes on a blueish hue and has no serrations. I can upload more pictures but request if anyone wants to see another angle or different lighting.
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This is a some kind of tooth from the Eocene. I found it a few feet from this shark tooth I also found but couldn't figure what this is. I was imagining fish? Microscope images included and also showing it is transparent in the light where the tooth gets thinner. No serrations. People didn't like that I used American currency so here is Ancient Rome, , Canadian, Belgian and wheat cents for any time travelers or old timers. I lost my snarge ruler unfortunately.
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I took the kids down to the beach at low tide today, and the strong winds earlier today at high tide had shifted the gravel beds pretty significantly, exposing a stretch of the Blakeley formation that's usually covered up. These immediately caught my eye as a possible vertebrate skeleton, but I don't really have any experience identifying fossil bones. I don't want to call this one in to the local paleontologist authorities unless that's what it is. I'll attach what I can here and a few more photos in thread.
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I've been trying to put together a collection of state fossils. Two states claim Basilosaurus and Vermont claims Delphinapterus . I have Miocene whale bones from VA and MD - broken vertebrae, ribs, and skull fragments and a complete dolphin periodic I'm willing to part with. Still working on the more complete vert pictures, but PM me if you want to see them. Don't need anything in perfect condition, fragments are fine. Anyone have anything to spare?
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I bought this fish skull a while ago. It is Eocene aged, from the London clay of the Isle of Sheppey, UK. Although this is perhaps one of the rarest fossils in my collection, I don’t collect in the London clay often and I much more frequently collect in the Coal Measures. I have therefore decided to trade this skull for something from the Upper Carboniferous. As far as I can tell, this skull is from Rhinocephalus planiceps and everything looks 100% genuine. I bought it from a very well known fossil dealer, who I will provide the name of to whoever I trade it with. If you have anything to trade, please let me know. I am most interested in Arthropods and fish from the British Coal Measures and Mazon Creek fossils, but I would consider any fossils from the upper Carboniferous. Thanks, Daniel
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A new paper is available online: Lambert, Olivier; Bianucci, Giovanni; Salas-Gismondi, Rodolfo; Di Celma, Claudio; Steurbaut, Etienne; Urbina, Mario; de Muizon, Christian, 2019. An amphibious whale from the Middle Eocene of Peru reveals early South Pacific dispersal of quadrupedal cetaceans. Current Biology doi:10.1016/j.cub.2019.02.050. The discovery of Peregocetus in the Pisco Basin of Peru constitutes the first record of a quadrupedal cetacean from the eastern Pacific Ocean, showing that quadrupedal cetaceans inhabited part of the Pacific Ocean. Literally, the basilosaurid Supayacetus and the early mysticete Mystacodon have illuminated early cetacean evolution in the Pacific Ocean, and Peregocetus extends the range of non-pelagicete cetaceans to the eastern Pacific realm, showing that terrestrially suited quadrupedal cetaceans spread quickly throughout the New World during the Eocene.
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The size is the most striking characteristic of this foraminifera species. They can reach up to 10cm in diameter. References: A. M. HEYNG (2012): Neugliederung der Adelholzener Schichten (Eozän, Nordhelvetikum) im Raum Siegsdorf-Bad Adelholzen unter besonderer Berücksichtigung der Großforaminiferen und Molluskenfauna (Teile 1 und 2). - Documenta naturae, 186: 1-105, 12 Abb.+Tab., 5 Taf., App.; München.
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Prepped by transfer method (Toombs, Harry; A.E. Rixon (1950). "The use of plastics in the "transfer method" of preparing fossils". The museums journal. 50: 105–107.) As far as I know, four bat genera with a total of 8 species are known from Messel: Palaeochiropteryx tupaiodon and P. spiegeli, Archaeonycteris trigonodon and A. pollex, Trachypteron franzeni, Hassianycteris messelense, H. magna and Hassianycteris? revilliodi. The genus Palaeochiropteryx is the most common and smallest bat from Messel with a wingspan of around 26 to 29cm. Archaeonycteris is rarer and somewhat larger - the wingspan is about 37cm. The largest bat in Messel is Hassianycteris magna with a wingspan of almost 50cm. References: Revilliod, P. (1917): Fledermäuse aus der Braunkohle von Messel bei Darmstadt. Abhandlungen der Großherzoglichen Hessischen Geologischen Landesanstalt zu Darmstadt, 7 (2), 162-201. Richter, G. & Storch, G. (1980): Beiträge zur Ernährungsbiologie eozäner Fledermäuse aus der "Grube Messel". Natur und Museum, 110 (12), p. 353-367. Simmons, N.B. & Geisler, J.H.(1998): Phylogenetic relationships of Icaronycteris, Archaeonycteris, Hassianycteris and Palaeochiropteryx to extant bat lineages, with comments on the Evolution of echolocation and foraging strategies in Microchiroptera. Bulletin of the American Museum of Natural History, 235: 1-182. Russel, D.E. & Sigé, B (1969): RÉVISION DES CHIROPTÈRES LUTÉTIENS DE MESSEL (HESSE, ALLEMAGNE). Palaeovertebrata, Montpellier, 1969, 3 : 63-182, 29 fig., 6 pl.
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This specimen belongs to a set of 9 specimens kindly presented by a good friend. Thank you to doushantuo for the link to Roux et al. (2019) paper.
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- eocene
- pseudoconocrinus doncieuxi (roux 1978)
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From the album: Pisces
Cusp 32m. Upper. From the phosphate plateau at Kouribga, Morocco Paleogene, Eocene
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