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Found 307 results

  1. Rodent Incisor

    Lower incisor from the theridmoyid rodent Isoptychus. Collected from a thin lacustrine horizon in the Lower Hamstead Member of the Bouldnor Fm. at Bouldnor Cliff, an early Oligocene locality on the northwest coast of the Isle Of Wight, UK. Identified by mammal specialist Jerry hooker from the Natural History Museum.
  2. I thought I would bring in the forum on a difference of opinion among a few collectors. Attached are views of a specimen identified as a Metaxytherium tusk (late Miocene, Bone Valley Formation, unnamed phosphate mine, Polk County, Florida) by one experienced Florida collector and another collector familiar with a range of marine mammal fossils. Two other experienced Florida collectors leaned toward an ID of whale tooth. The specimen resembles one in Domning (1988: p. 409, fig. 7) which was identified as a Metaxytherium tusk. The specimen in question is straight like a tusk with an enamel-coated crown with a constriction toward the tip as in the figure. I've looked for a similar specimen labelled as a whale tooth in various publications (Richard Hulbert's "Fossil Vertebrates of Florida; the Lee Creek volume that covers mammals, etc.) but couldn't find one. Metaxytherium was a "sea cow" or dugong relative that lived during the Miocene - a time when sea cows were more diverse and widespread than they are today. The Florida collector who thought it was a Metaxytherium tusk pointed out the enamel texture and its laterally-compressed overall form was the same as a tusk. The other Florida collectors didn't point out any particular feature to count it out as a Metaxytherium tusk - just didn't look right to them. I can understand having difficulty articulating an overall impression. Those two guys know Florida fossils so I respect their opinions. I'm interested in reading what other collectors think - especially all the Florida/Bone Valley collectors out there. I'll try to get a scan of the figure in the Domning article and attach it - couldn't find a pdf in a quick search. Thanks, Jess Domning, D. P. 1988. Fossil Sirenia of the West Atlantic and Caribbean region. I. Metaxytherium floridanum Hay, 1922. Journal of Vertebrate Paleontology 8:395–426.
  3. Bosque River Mammal

    Found this while hunting gravel beds a few weeks ago. Am thinking bison, but not sure. Doesn't seem to be fossilized. Don't laugh at the butter knife....I lost my rock hammer
  4. I found this yesterday, November 26, down at Venice Beach, FL near the fishing Pier, along with an assortment of shark's teeth, coral and other interesting things. It looks like a tooth to me but I didn't think it was a shark tooth. Does anyone know what it is from? Thanks in advance! I'll have to post separate posts for different angles; I guess my files are large.
  5. Is it a hoof?

    Hi Everyone! I found this today digging in an outcropping of the San Mateo formation in Oceanside, California. I have found horse teeth at this site before. Not sure about this one, but I am wondering if it could be a hoof? Any thoughts are greatly appreciated! Thanks
  6. merycoidont lectotype

    madermerycod21257-12488-1-PB.pdf Horrible mistake:of course it's merycoidont The "click and hold option to edit title "doesn't seem to work? EDIT As somone famous once said : "I stand by the mistakes I've made"
  7. Found two things at different times a while back in the creek that I am in need of direction on trying to ID. I find horse teeth some at GMR but am hesitant to assume that's what either is - not just because of the small size but because the patterns are a bit different from the horse teeth I've found - though none 100% complete for me to say that is more than an armatures eye. Any assistance to ID this would be greatly appreciated! I copied the main concerns from FAQs on posting here, so hopefully I was able to provide enough detail for some assistance. 1- LOCATION Greenville, NC Greens mill Run. (Green Mill Run) 2- GEOLOGY/Formation Generally this location is part of the york town formation, Miocene-Pliocene-cretaceous 4- ASSEMBLAGE Shark teeth (mostly goblin, crow, makkos, tiger near by) Belemnites and whale bone. Items are shown next to th e inch side of a ruler. 1. 2. The other tooth
  8. pleistocene toe bone?

    I found a phalanx or metapodial bone that I'm not familiar with. It's from pleistocene river gravel on the Brazos in Texas. I'm getting a sloth vibe from it, but can't find a match.
  9. White River Mammal skull

    Hi Everyone, I wondered if you could help me confirm the species of the following skull I’ve just prepped. It’s a skull and forelimb found near Lusk, Wyoming in the White River Formation. I think this is a nice example of a Mesohippus but wanted confirmation if possible. Thanks in advance.
  10. Hi, I was out collecting from the Bouldnor Formation on Tuesday as usual and came across this piece of bone on the foreshore west of Cranmore. I initially thought it may have been part of a vertebra, but from what I can tell after looking at it further I think it may be part of the occipital bone/nuchal ridge (not sure on the proper name for this region of the skull so please correct me if I'm wrong) from the back of a mammal skull, as I can see an area that may be the beginning of a sagittal crest. The specimen is damaged in some areas and has clearly been broken off from a larger specimen at some point and worn by the elements. I was wondering if anyone would be able to confirm if this is a piece of occipital bone, and if it would be possible to ID it further based on its morphology etc. Thank you, Theo
  11. Cretaceous Mammal Tooth

    Hoping for a little expert help. This looks like the lower premolar (blade) of a multituberculate but I was wondering if a local expert could help identify the species. I've spent a fair amount of time trying to ID based on O C Marsh cretaceous mammal plates, but can't place it. It's about 1/4" across and was found in the Lance Formation, Wyoming (so late cretaceous).Thanks in advance.
  12. whale bone

    Heading back to Singapore with hundreds of tiny shark teeth for my fossil-less friends! I found some "whale bones" that someone had unearthed but left behind in the creek. A couple seemed unusual. One, while thick and heavily fossilized had a concave surface suggesting either hollow inside or maybe just a convex/concave bone piece? (Aquatic mammals don't have hollow bones, correct?) The second, also fairly thick and heavy but obvious fibrous "grain" on one side, has a straight v-shaped crease (about 1/8" deep) the length of the piece. Wondering if this is natural or possibly man made? There is also a much weathered piece which had some obvious fibrous grain when wet, not so obvious now. Looks like part of a joint?
  13. Am i spoiled?

    I live in Arcadia Fl and have much time to dig in the peace river. I have a pretty extensive collection of great fossils. My favorites are mammal teeth and large verts. Still after that giant meg. As a Fl resident (and native) I find it hard to get excited about marine fossils, every roadbed is loaded with them, literally made of them. I suppose if I lived in Nebraska, I would feel differently. Any other FL members, feel this way? I am sure I am selling myself short and missing some fascinating paleontology, cant help it, the peace river is 8 blocks away.
  14. Hi, I was out this morning doing some collecting at Bouldnor Cliff (thought I'd mix it up from Hamstead for a change) and came across this distal portion of a mammal humerus lying on a mudflat. I'm regular collector along the north coast and know the vertebrate taxa and stratigraphy like the back of my hand but this humerus is unlike anything I've found before mammal-wise. I noticed straight away that it has a supratrochlear foramen, which from my own knowledge and some online research is a feature often found in canids. Material from amphicyonids like Cynodictis and Amphicyon have been found from the Bouldnor Formation (Rupelian aged, and spans 34.0 - 32.5 mya) but I'm unaware of any canid material, so I was looking to perhaps get a second opinion on whether this is canid, and/or whether the supratrochlear foramen is a reliable indicator of canid/carnivoran material. Any help is much appreciated.
  15. Mammal tooth

    Hello every one, recently tooth a trip to brownies beach (Miocene,Calvert fm, zone 4?) and a found this mammal tooth, it’s worn and is missing a root. Is it possible to get an ID on this? I was told peccary molars are among the more common mammal teeth there, but it’s not as wide as I would expect. It looks shrew or bat like to me. Of course I will now call @Harry Pristis to help.
  16. Hello everyone! This bone was found in Monmouth County (Big Brook area) New Jersey. We found this on the way home from a trip and after debate over modern or not, I decided to bring it home and clean it up. A lot of modern bones here look older than are and I am not very versed in Pleistocene material so I figured I would post it here and see what everyone thinks! Thanks! @non-remanié @Trevor @bucky @shajzer64
  17. Flag Pond, MD ID Help Needed Part 2

    Also found at Flag Pond this summer. I would love help IDing these as well! Thank you!! #1 (approximately 1 inch) #2 #3 (approx 1/2 inch) #4 (1 inch x 1/2 inch x 1/2 inch)
  18. Flag Pond, MD ID Help Needed Part 1

    I would love help identifying these fossils... all found this summer at Flag Pond Nature Park. Thank you!! #1 (approx. 1 inch) #2 (approx. 1 inch) #3 #4
  19. Fossil / Artifact / ? Help with ID

    Hi guys! I recently found this bone in an Island in the Savannah River, really close to Savannah. There where a lot of pottery shards near by with punctuations and patterns so I'm assuming it's some kind of artifact. It measures 7.10" inches the holes are .0011 inches Note the "cut-like" incisions on the broken part and also the two holes (they connect to the inner part of the bone, so if you pour water on one end it will come out of the holes) at first I though they where foramen (where arteries go into the bones) but they look like drilled and most foramen go diagonally into the bone. See for your self! Any comments are welcome! Thanks!
  20. Mammal Tooth for ID

    I picked up this tooth from Bouldnor Beach on the Isle of Wight in the UK a couple of years ago. It is from the Bouldnor Formation and is earliest Oligocene, about 33 million years old. I'm confident it comes from a mammal of some kind, a rooted canine but that's as far as i've got. To provide some context the site has produced a number of pig-like anthracotheres (the most common mammals), carnivores like Hyaenodon, entelodonts, early primates like Leptadapis, the rhino-like Ronzotherium, deer-like forms and various others. Can any of the mammal people offer their thoughts? @Harry Pristis? Unfortunately the crown is almost completely worn away which i know is a huge detriment to identification. It measures 3.8 cm long, but of course would have been longer with the crown intact.
  21. Not sure what these are

    I went out exploring for possible fossils, and found a lot of what appear to be teeth, vertebrae, and assorted bones. Any further help with identification of these interesting artifacts would be greatly appreciated as I'm new to this fascinating field.
  22. Tooth id

    Hi- I've bought some time ago this mammal tooth (I've attached three pics) from a Chinese seller, who didn't know anything about it (only its Chinese origin)- I think it comes from a carnivorous species, but I'm not expert at all in that field- Maybe anyone can help me to ID the tooth with some more information- Thanks in advance, Fabio
  23. Does anyone have any idea what it is?

    Hi dears colleagues!! I found this jaw fragment with 3 teeth. appear to be incisive and the mandibular fragment includes part of the mandibular symphysis.Does anyone have any idea what it is? Regards
  24. looking a gifted pdf in the mouth

    famo_miohiporgon.pdf fairly new,as these things go. Size:< 1 Mb "Statistical methods will better inform analyses that address the continent-wide issue of distinguishing Mesohippus from Miohippus. These two genera are difficult to distinguish(Stirton, 1940), but are considered distinct based on the presence and condition of the articular facet on the third metatarsal, which articulates with the cuboid; larger hypostyles; a longer face(*); and a deeper facial fossa (Prothero and Shubin, 1989; MacFadden,1998). The paleopopulation of John Day Miohippus is not adequate in addressing this issue because there are only five occurrences of Mesohippus in the entire assemblage. Very few specimens from the Turtle Cove assemblage were identified as Mesohippus, and those that were identified as such were determined to be statistically different from the specimens of Miohippus. " (*): for the ones among us who see the funny side of equid systematics