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Found 288 results

  1. I found this Mandible piece in a river in North Central Texas. I'm not quite sure what it's from (might just be a cow). But i would like it to be a Camelid or Bison at least haha. Thanks!
  2. Curiosity Killed The Newbie...

    I would love input as to what this tooth may be. Found in the St. John's river (actually my toes found it). The folds and whatnot just piqued my curiosity as I have never seen a tooth like this. It's small and flat and I can only guess it came from a mammal. Any help is greatly appreciated.
  3. I purchased someone's lifetime collection of ice age mammal bones on ebay. On a personal level, I find this both a great learning opportunity, as I'm not well versed in vertebrates, and also somewhat depressing that someone's entire life's experience collecting changed hands for a small bit of paper. Times are hard, I wish him well. Anywise, I'm looking for a way to identify these bones without just asking people what they are. I'll learn the biology better if I research it myself. Does anyone know of a good website or book for deer, elk, bison fossils from the Kansas River area in Kansas? I appreciate any leads. Ken Moore Www.treasurehuntingtrucker.WordPress.com
  4. On a quick trip to Big Brook today, I found this in my sieve. It looks to be a mammalian jaw of some sort. I am not sure if it is modern or not. It has three teeth and one missing. It looks to be herbivorous to me, but I may be wrong. Please help me put a name to this specimen. Reference the thumbnails below for what it looks like.
  5. What Is This Molar From?

    I got this from a friends father that passed away, I have no info at all and I cannot find anything like it anywhere.
  6. Mammal Bone..?

    Hey guys! Hoping someone on here can help me ID this bone. I know it's not exactly a fossil but, if anyone has any idea what this may be please let me know. I found it on the beach at Sanibel Island, Fl this past summer, this is the gulf coast of Florida in the US (for those of you unfamiliar with Florida). Sorry, I tried using the link to the map but it's broken. Either way, I've heard everything from "cow" to "cetacean" to "human." Although I really doubt it is the third (or hope it is not)...as a Biologist this seems like a rather clunky and oddly shaped bone to find washed up on shore. My curiosity has gotten the best of me after having it look at me for 6 months as I work. Someone, anyone...ideas?
  7. Hi Folks- Similar to my post on Mazon Creek 2012...here is my post for Florida fossils in 2012. Mostly a few trips to Mazon Creek and other locations. All trips were led by Mark Renz of Fossil Expeditions.
  8. Mammal Tooth? And Unknown

    These fossils were given to me so I have no clue where they are from. It would be interesting to know what they are/what animal they came from. The tooth is a little over two inches in length. I have absolutely no idea what the second fossil is. Any help is appreciated and thank you to those who attempt to identify them. Pictures: Tooth Unknown
  9. Pleistocene? Mammal? Bone

    Found this in the North Sulphur River (north Texas) Saturday. It's definitely not Cretaceous, and it's not a vertebrae. There are bits of mineralization attached to it, and it's too heavy to be modern. My guess is that it's Pleistocene. I think it is relatively complete, but I'm not too good with ID on the non-reptile stuff. Some kind of toe bone from a large mammal maybe? Any help appreciated. Thanks!
  10. South Dakota Fossil Finds-What Is This?

    I found this in southwest South Dakota on private property. There are three different items posted here. Appear to be bones. Can you help? Thanks
  11. a book review of: The Beginning of the Age of Mammals by Kenneth D. Rose. Johns Hopkins. 2006. $160 retail hardcover. Today, when we think of prehistoric mammals, images of mammoths, wooly rhinos, and Smilodon might come quickly to mind but they date back only to the recent ice ages - mere moments ago in geologic time. If your first thought was of Oligocene oreodonts, entelodonts, or hyaenodonts, then you might have a better idea of how many entire families of mammals had already diverged and died out even before the Oligocene Epoch started 34 million years ago. "The Beginning of the Age of Mammals" reviews the fossil evidence of the known mammal taxa of the Paleocene and Eocene Epochs - essentially the first half of the Cenozoic Era. Chapter 1 defines scientific terms that occur repeatedly throughout the book and sketches the world as it changed during that phase starting with the mass extinction event at the end of the Mesozoic Era. It wiped out the dinosaurs and severely thinned out the mammals and other organisms but also opened up lands of opportunity for the survivors. On page 19, a global view unfolds with maps of the earth from 70 million years ago (Late Cretaceous) and 53 million years ago (Early Eocene). Back in the Late Triassic, the supercontinent Pangaea began rifting apart. Dinosaurs, mammals, and other organisms drifted along with the pieces that slowly transformed into the continents we know today. Seventy million years ago, tyrannosaurs were the king of beasts and shallow seas invaded wide areas now high and dry so the land masses appear fragmented to modern eyes. By 53 million years ago, the dinosaurs were gone and the map is more familiar but the continents still appear misdrawn, connected or broken in the wrong places. Chapter 2 supplies background on mammalian anatomy explaining adaptations in teeth and bones within different orders and how behavior can be deduced from the shapes of those elements. Chapter 3 briefly examines Paleozoic-Early Mesozoic ancestral groups and Chapter 4 highlights the improving Mesozoic fossil record focusing primarily on groups that lived only during that era. Chapter 5 is devoted to marsupials and their Cretaceous relatives. Chapters 6 through 15 cover placental mammals with sometimes debatable though convenient groupings. Rose explains his choices and points out relationships widely-recognized and those that remain controversial. Chapter 16 summarizes the previous chapters and also outlines the Paleocene and Eocene mammal fossil record of the various continents. During the "hothouse" Eocene, even Antarctica had land mammals. This book is geared to vertebrate paleontology students at the undergraduate and graduate levels so it is very technical. I would not recommend it to someone only mildly interested in the subject. However, serious mammal fossil collectors are probably up to the challenge of the detailed text which is supported by numerous nice illustrations (even a cool set of color plates showing fossils and artwork). While the emphasis is on Paleocene-Eocene forms, Fossil Forum members specializing in Oligocene mammals will find value in this book since many Eocene groups survived at least into the Early Oligocene and some of those forms are discussed as well. I would also recommend it to the fossil collector building a personal library of key paleontological references. According to Rose, before the release of his book, the only volume like it was "Mammal Evolution: An Illustrated Guide" (Savage and Long, 1986). True to the subtitle, its pages were visually appealing with abundant restorations of extinct forms so it became popular with fossil collectors too. "The Beginning of the Age of Mammals" is valuable not just for its coverage of Paleocene-Eocene taxa. Those groups do not begin to be discussed until Chapter 5. The previous 71 pages serve as excellent background into the definition, origin, and diversification of mammals. The reader learns that drawing the distinction between a Late Triassic mammal and a therapsid relative takes more than just the isolated teeth and jaw fragments usually found. The reader also sees that the three current branches (monotremes, marsupials, and placentals) are all that remains of a much more varied family tree clipped by low-level extinctions after the Triassic and severely trimmed by the mass extinction that ended the Cretaceous. It seems Rose has been preparing to assemble this work his whole career. A scan of the cited literature reveals his 1972 description of a new tillodont followed by articles on primates, artiodactyls, perissodactyls, plagiomenids, and other groups along with a few Paleocene and Eocene faunal reviews. He also co-edited a 2005 volume on the evolution of placental mammals. As an added note, during my reading, I noticed Rose cited a work by the Fossil Forum's own JPC. Unfortunately, this title is not cheap ($160 retail hardcover without a paperback edition; still almost $120 on amazon.com). Last year, I found it used for about one-third the price. A $50-75 hardback is still pricey, especially these days, but the potential buyer should weigh cost and value. Among the various $100-300 paleontology references, this one is definitely worth its retail price and a great bargain if you find it for less. While a few Paleocene-Eocene forms have gained some notoriety, such the cat-sized horses of the Early Eocene and the rhino-like titanotheres of the Late Eocene, the rest of them remain unknown to the public. Various Paleocene groups did resemble modern mammals but were unrelated to them. Paleocene primates looked like rodents at a time before there were rodents. Meanwhile, the earliest members of some of today's groups were not so recognizable. Eocene dogs were built like mongooses; Late Eocene bears could pass for dogs and Middle Eocene whales still had feet. This book puts names to all those otherwise obscure beasts that bridged the ancient and the modern. Jess
  12. Back From Vacation

    Hello Everyone! So, it's been so long since I posted on the Fossil Forums it's almost like I'm new again! Since moving away from Florida I haven't done as much collecting, but my recent vacation took me back to the Peace River again! So I spent a day out in the water sifting the gravel and here are some shots of what I found. With the water level so low it was impressively easy to find untouched gravel beds. Here are the horse teeth I found. A few of these are in great shape and possibly from non-Equine horses. I will spend some time figuring those out later. These are a number of my more interesting finds; the top middle carnivore molar was exciting to find, for sure. I'll get better pictures in the ID section later today or tomorrow. This wouldn't be a Peace River post with out some Fragolodons. Great teeth found. Unfortunately the gigantic Hemipristis serra is broken, it would've been close to 2 inches on the long side. Here are the leftovers, several cetacean earbones, bullae and periotics. Mammoth tooth fragments, galore. And then all the funky little things I like to take home to see if I can make sense of them. Overall, it was a great trip! Probably the most productive, in terms of quantity and quality, that I've had out there. I'll be posting a few things in the ID section later, notably the broken Carnivore molar and canine tooth (or dolphin?) that is next to it. Roddy
  13. The various gem-mineral-fossil shows that are collectively known as "The Tucson Show" ended last Sunday. Many people consider the official end to be the close of the main show at the convention center but many dealers are long gone by then at the other shows. I've been going to the Tucson shows since 1989 with some missed years in the early 2000's. I've seen established shows disappear or change venue with even the names of the venues changing two or three times. The town had seemed to deteriorate over time, but this year, Tucson looked a little clear - perhaps because construction on the highway that cuts near much of the action has finally been completed after several years of roadwork and associated detours. Much of my interest lies with fossil shark teeth so much of my attention was focused in that direction but I couldn't help seeing a variety of specimens and this report will include a few mentions of other vertebrates and some invertebrates. I don't have any photos to include at the moment though I will try to add some soon (specimens I acquired). Part of the problem is that a growing number of dealers frown on or outright refuse to allow photographs to be taken. Some of the specimen photos that have been taken in the past have ended up on Ebay or as other online offers even though the photographer didn't own the specimen. The photographer would include the dealer's business card in the shot so that dealer is the one mired in later turmoil while the photographer is the one would gets the money and disappears. Another scam involves a photographer bird-dogging a team of seasoned thieves to valuable specimens. They shoot high-dollar items (clued in by the asking price on the sticker) and then shop the photos to customers and then another member of the team just steals the specimens. Someone distracts the dealer with questions/conversation while an accomplice quickly palms a specimen into a pouch or into clothing. Some dealers make good targets especially if they have big, undermanned booths and they have hand-sized specimens worth at least several hundred dollars on a table. Most dealers don't lose things that are worth $5-10. That's not worth the risk they are willing to take. Two years ago, a friend lost a $2000 meteorite with the distraction ploy. The other problem with photography is that the lighting is often not close to optimum especially in the rooms or in a tent where natural light cannot reach. A problem I had was that much of the time I was in town was taken helping a friend in his booth. I didn't bring a camera and wanted to go buy one but didn't have much opportunity to go to a store. Perhaps someone else was able to take some photos of the displays particularly in the Tucson City Center Hotel (former Innsuites Hotel) ballroom? During the couple of days before the show opened at the Tucson City Center, I had some time to look around. One room was shared by a few dealers. One of them had an assortment of shark teeth from the Eocene and Miocene of Peru - some nice auriculatus and some beautiful hastalis with great color (shiny reddish with darker streaks, other multi-colored specimens). It was more Peru stuff on one table than I had seen in years. Apparently, someone had either thinned out part of his old collection or it was an old collection. The lighting wasn't the greatest in the room and the prices were high but several teeth did sell quickly. I saw some great whites from Mexico, a nicely-colored meg from the Calvert Cliffs, and a well-preserved Desmostylus from the the Sharktooth Hill Bonebed (not a shark - an extinct marine mammal with no close modern relative). I saw the Helicoprion specimen that someone mentioned elsewhere here on the forum. I hadn't seen one for sale in maybe fifteen years though someone told me that a couple were available at a Denver show maybe 5-6 years ago. The whorl was shiny black on black matrix and spiraled out to cover at least the space of a large grapefruit. I saw numerous Paleozoic shark teeth for sale (some from the U.S; some from Europe) and prices were high. My problem is that I recall a nice Petalodus being about a $40-50 tooth around 15 years ago, but now, it's a $150-200 tooth. More people try to restore shark teeth these days too so you have to look for that when you like less-common genera or species. Some nice things become more in-demand, and therefore more valuable, over time. In the ballroom at the Tucson City Center Lynne Clos of The Fossil News was offering back issues from 2010 for a buck each. I bought one of each of the different available issues. A few days later, she told me to take some for free because she wanted to lighten the load home. Perhaps one of my more interesting finds was a juvenile megalodon from the Bone Valley Formation. It's just over 1 1/2 inches (about 4cm) with a light gray root and a dark gray crown. Some of the serrations are chipped off and the bourlette has been worn off but the root is in great shape. The crown seemed unusually thick and I confirmed it when I got it home. It's more inflated (especially labially) than another "Hubbell" I have of about the same size. I couldn't pass it up at $10. I saw some Sharktooth Hill Bonebed material for sale and bought two Allodesmus astraguli (ankle bones) and a nice postcanine tooth. These teeth often bear well-worn crowns. The weird thing with the wear pattern is that the tip is generally in good shape but the mesial and distal sides are worn from contact with the opposing teeth. I talked to a couple of forum members at different times during the show: isurus90064 and veomega. I will try to write more tomorrow...