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  1. Greetings experts and aspiring experts. I bought this desmostylus molar crown a few months back. I'm thinking that it would benefit from some good, possibly professional, prep and preservation work. If you had this tooth in your collection, in its present shown condition, what would you do to have it present and preserve better? Any input is appreciated. Many thanks. Cheers.
  2. I had the privilege of digging for seven hours on a parcel that was once part of Ernst Quarry, but had long been sold. Here are the best items that were found. There was more of either the same or broken, not shown. The matrix was extremely hard and difficult to extract, but the hard work was worth it. One of the Hooked Mako's has tiny 2d manganese dendrites that grew on it. One of my other favorites is a pathological Cow Shark. The 3 sections of the Ray Plate are rare for Sharktooth Hill. There are some interesting micro teeth as well.
  3. At the moment I happen to be picking through some micro-matrix fines from Shark Tooth Hill that @ynot graciously sent to me some time ago. All sorts of interesting micro-chondrichthyan fossils are plentiful in the really fine matrix (2 mm down to 0.5 mm). I'm also finding bits of the dactyl claws of stomatopods (mantis shrimps). There are two main types of mantis shrimps--the smashers and the slashers. The smashers have front claws ending in a hardened rounded "hammer" that they use to smash through the exoskeletons of crustaceans and mollusks (with the force of a .22 caliber bullet). The slasher types hide in burrows and wait for prey (mainly fishes) to swim overhead. They dart out of their burrows and with a very praying mantis style motion impale their prey upon these spiny dactyl claws. We also find both dactyl claw parts and the rounded ends of the smasher's "hammers" at sites in Florida and this has Roger Portell at the FLMNH interested in fossil stomatopods. I recently let him know that while I haven't yet found any "hammers" in the STH matrix, I have found smaller fragments of the slashing dactyl claws which are turning up in my matrix picking. It would be really useful to have some specimens of larger fragments of these dactyl claws from STH for our research. I'm wondering if any member out there who has picked STH micro-matrix has noticed these stomatopod dactyl claw fragments and more importantly saved them with the rest of the diverse micro-fossils from this wondrous locality? If you have some stomatopod material from STH I'd love to hear about it. You can reply here or drop me a PM. Thanks in advance. Here are some images of really nice stomatopod dactyl bits from the Montbrook site as well as the more usual smaller fragments from Cookiecutter Creek. Also, a link to a great page about stomatopods and an image of the two types of claws to help you envision how these fit into the larger picture. Cheers. -Ken https://arthropoda.wordpress.com/2010/02/09/why-stomatopods-are-awesome-i-super-strength/
  4. A number of years back Tammy and I had a great day in the field digging for shark teeth at the Ernst Quarry in Bakersfield, CA. We were joined by longtime forum member Tony @ynot who drove down from northern CA to meet us. Those interested can read about that trip here: http://www.thefossilforum.com/index.php?/topic/60863-shark-tooth-hill-ernst-quarry-hunt-on-2016-01-22/ A number of the nicer loose teeth were wire-wrapped into necklace pendants and given away as presents and a few teeth still in the sandy matrix were prepped out for display (some of which are presently on display in an exhibit at the FLMNH display museum). The bulk of the rest of the interesting teeth are being donated to the FLMNH collection as the museum's collection was a bit deficient in STH material (a few larger teeth donated over 50 years ago). As these are going into the museum's collection I want to have good IDs on the specimens. The hooked Cosmopolitodus (Isurus) planus teeth are reasonably distinctive and I think I have a handle on at least the obvious curved uppers. The rest of them I am not certain of the proper ID and I'm hoping for some help from folks who are very familiar with this locality. I'm starting out with the larger white/mako teeth and then I'll be sorting through the smaller ones. If I have questionable teeth in some of the smaller ones I'll add additional photos. I've labeled all of the teeth with numbers and letters so that there will be no confusion in identifying which tooth we are discussing. Looking forward to getting these teeth sorted out and also learning a bit more about the shark fauna of a site that I've had the fun of collecting (if only once). Cheers. -Ken All of the teeth in image 1 look to be the Hooked-tooth White/Mako (Cosmopolitodus planus) and seem to be all from the upper right quadrant of the jaw. More help on these would be greatly appreciated: Thanks for looking. Cheers. -Ken
  5. Greetings all. I recently purchased a tooth that was said to be from the Bakersfield area. It's not that I don't believe that it is from the Temblor formation, or nearby areas, it's just that the tooth itself seems an odd color for Bakersfield. Most teeth that I have seen from there, including those from desmostylus, are much lighter all around. Maybe it hails from elsewhere? Is the color that unusual? Bad desmo hygiene? And what type of minerals in the area might contribute to such color? Manganese oxide perhaps? It seems I remember hearing it was prevalent around Bakersfield. Many thanks in advance. Cheers.
  6. Meganeura

    STH Micro Matrix

    So I was recently lucky enough to very generously receive some amazing and very very rich STH micro matrix! So here’s the finds, ID help courtesy of @digit and @MarcoSr’s website. Starting off with the shark teeth - alongside the micro mix I was given a very nice C. planus tooth. So here’s that alongside the 2 C. hastalis teeth I found: Bigger other shark teeth - Negaprion, Carcharhinus: Squatina - Angel Shark: Squalus - dog shark: Cretorhinus - Basking Shark: Galeorhinus - Tope Shark: Symphyseal tope shark: Triakis sp. - Hound Shark: Heterodontus sp. - Horn Shark: Posterior: Anterior: Dermal denticles: Vertebrae and fish spines: Fish teeth: Pharyngeal fish teeth: Now onto the Ray teeth - Dasyatis and Gymnura cause I can’t tell the difference - there were SO MANY OF THESE! Easily 300+. The nuptial/male/breeding teeth from Dasyatis and Gymnura: Mustelus sp (Smooth-hound shark) and Rhinobatus sp. (Guitarfish) cause I really can’t tell the difference either: Mobula sp: And finally, the 3 Raja (Skate) teeth I found: There were a couple other finds - couple triggerfish teeth, a barracuda tooth, etc as well! I went through the matrix twice and I know I’ve missed stuff too. Im surprised I didn’t find any shark denticles, but ah well. Also not included is all the Ray mouth plates and broken shark and Ray teeth I found! Tons of stuff that I’m very happy with! If anyone wants pictures of anything in particular do let me know!
  7. Greetings all. It looks like I'm finally getting my hands on a decent desmostylian molar from STH. While I'd prefer to have found it in the ground myself, I can make no such claim. It was a purchase. While easier on my back, the rewards are certainly less. But I'll take it. The images of the rootless tooth look like it has never even had the matrix rinsed from it, as sand grains are in evidence falling from the tooth. Does anyone have any dos and don'ts for preserving the tooth? I have dealt with shark teeth from the same formation and usually have no problem just rinsing them with a little scrub from my roommate's toothbrush. Should such treatment be avoided or duplicated? Thanks ahead of time. Cheers.
  8. Greetings all, As we approach the third anniversary of the loss of Doren "caldigger" Strane (RIP, my friend.), I am looking over some fossil pieces he gave me while standing in the Denny's parking lot at Merle Haggard Blvd in Bakersfield. For some reason this one struck me as looking more land mammal, like an equus of some sort. Or perhaps it is from a marine mammal and I just don't recognize the shape of the bone, which wouldn't be a big surprise. I do think that it's got a good shot at an ID other than "chunkosaurus", which was the ultimate ID of the fossil I asked about in my first post here 4-5 years ago. I'm pretty sure that it came from Bakersfield's Temblor formation, as that's where Doren got most of what he had. But I have not seen much, if any, land mammal fossils from there. I do know that Doren once found a little rodent skull that he donated to a university or museum for study. But I'm pretty sure that this bone isn't from a rodent of any type. At least of any type I'd want to run into in the flesh. Any ID ideas are greatly appreciated.
  9. ThePhysicist

    Extinct White Shark Tooth

    Identification Teeth of C. hastalis closely resemble those of the modern "great white" (C. carcharias) in having erect triangular cusps, no lingual dental band ("bourlette") or a thin one, and no nutrient groove. Differing from the extant species, they have no serrations on the edges.
  10. ThePhysicist

    Carcharodon hastalis tooth

    From the album: Sharks

    Historically known as "makos", we now recognize C. hastalis as being ancestral to the modern great white shark.
  11. Hi all, Just got back from my second trip to Shark Tooth Hill and wanted some advice on how to preserve these teeth. Mako? how would you prep these buggers for long term display?
  12. Well, I am out here in Mojave, CA for work for the next 6-12+ months and since I cannot dive for fossils like I can back in Florida, I might as well get back to my roots and dig for them again. I am all set to go April 2nd & 3rd. I hope to see/meet any fellow members. I will be in my gray Jeep Grand Cherokee with Florida veteran Plate. I will try and document this trip and share it as much as possible. I figure I would make a list of items to bring, I welcome any and all comments from those that have done this before. First I will have a large straw hat and sunblock, I may even bring a canopy to put over my work site. I will also have a bandana to cover my mouth from dust, gloves, and safety glasses. Second, I will have my own rock pick, geo pick, rock hammer, chisels, folding shovel, sifter, bucket, and tinfoil to keep fossils and matrix together. Finally, I will have plenty of water, a folding chair, & kneepads. Any STH vets have anything else to add? maybe I might have missed something?
  13. ThePhysicist

    Carcharodon planus

    From the album: Sharks

    "Hooked white shark/mako" Round Mountain Silt Fm., Sharktooth Hill, Kern Co., Bakersfield, CA, USA
  14. Hey everyone! Going to STH somewhat soon, I plan on going to Ernst quarries(or if anyone has any other sites they’d recommend), and was wondering if there were any tips anyone could give me, since This will be my first time. Also, are there safety instructions they give you when you get there?
  15. JBMugu

    STH Bone/tooth/tusk?

    Hi everyone, I have what I thought was a mammal tooth until I cleaned the end off. From research online the end looks tusk like but I don't want to get over excited. Let me know what you think. Size is 1.8 inches
  16. Hello all Up for trade I offer this nice set of Shark tooth Hill teeth from Kern County California. In return for this set, or individual teeth I would like to get crocodile or crocodile-like (alligator, Phytosaurs...) teeth from as many various locations/species as possible. This group of animals is a bit underappreciated I think, but last time I lend some fossils to the local school, there were some crocodile teeth among them and the kids really loved them and that surprised me a bit. Anyway, I hope I can expand my crocodile collection a bit. These teeth are available for trading: Upper row: Allodesmus tooth, two unknown whale teeth, Desmostylus tooth, Allodesmus canine (glued) Lower row: Dolphin ear bone?, Rooted Allodesmus tooth, Rooted whale tooth. I already got: Still undetermined species from the Hell Creek Formation, USA Phytosaur teeth from the Chinle formation, USA Geosaurine Metriorhynchid, from Painten, Germany Unknown species from Unknown formation or location in Argentina Multiple species from the Kem Kem beds in Morocco Sarcosuchus imperator from the Elrhaz formation in NIger. Machimosaurus sp. from Portugal. Yet unidentified tooth from France (Self found). Might be crocodile, might be other reptile. Alligator teeth from Florida USA. What I really want: Big croc tooth from Java, Indonesia Pallimnarchus tooth or jaw piece from Australia Razanandrongobe tooth from Madagascar Kaprosuchus tooth from Niger Deinosuchus tooth from the USA Croc crowns (+6cm) or rooted croc teeth from Kem Kem. Crocodile teeth from Dinosaur bearing formations throughout the USA Canadian croc tooth. I'm also interested in other crocodile teeth, depending on country, or condition.. Size isn't really important. So far, on a map, these are the countries I got crocodile teeth from: Who, oh who could help me to paint this map more red.
  17. ThePhysicist

    Squalus occidentalis (2)

    From the album: Sharks

    Sharktooth Hill, Bakersfield, CA Backlighting reveals some cool internal structures.
  18. ThePhysicist

    Squalus occidentalis (1)

    From the album: Sharks

    Sharktooth Hill, Bakersfield, CA
  19. After the forums last successful ID of a desmostylus tooth, I thought I would see if you guys have any ideas on this one. I have had it for a while and still can't figure it out. 3 inches long, one inch thick. Please let me know your ideas! @siteseer, @Shellseeker
  20. PrehistoricWonders

    STH fire zone hemi’s

    Hey, I was wondering if it’s possible to find fire zone hemi’s in STH, or not? TIA
  21. After posting ID questions on a couple of STH whale bones that were mostly unidentifiable, I decided I'd post images of the one whale fossil I have that seems like a slam dunk ulna (Aside from an easily ID'd ear bone.). It may be debatable as to which specific family category, but at least its location on the whale is pretty certain, right? Too bad it's a partial, but it's all I have. It looks a lot like one that is called Tiphyocetus temblorensis in an image from the California Academy of Sciences. Tiphyocetus Temblorensis Even the mottled coloring is similar. As I mentioned, this specimen is from Bakersfield, Shark Tooth Hill area specifically. While people may have seen a fair number of these, I thought it was cool enough to post an image or two of. And, people will be happy to know, I don't entertain any thoughts of its being part of a whale jaw. In fact, I'm over-jawed about having this one. Cheers.
  22. Notidanodon

    Sth stuff (:

    Hi guys been going through some matrix and found some oddballs wondering if anyone could help, thanks 1.looks crocish? 2.looks almost like a worn pufferfish mouthplate? No idea though 3. Not really an oddball but wanted to show the wonderful purple colour 4 some kind of fish tooth?
  23. Notidanodon

    Searching STH matrix

    Hi guys , recently bought a bag of micro matrix and some large chunks of matrix along with some unprepared pieces, the bag of matrix is on the plate and the stuff still in the bag is the matrix that I seized from matrix blocks and matrix removed in preparation . This is all from silt mountain fm. Ant hill
  24. Notidanodon

    Giant ground sloth ungual?

    I had no idea what this one was, probably just a scrap of bone but worth checking I think, sorry for lack of scale but it’s around 14 cm long it’s from STH (also I havent fully prepped it yet as I want to know whether to get someone with air tools to do it or do it myself)
  25. caldigger

    Not sure what I am looking at.

    Found this on my last trip to Bakersfield. Temblor Formation, mid. Miocene Normal finds are shark teeth, marine mammal parts, fish verts, etc. Basically all marine unless something washes in. Item is 25mm wide x 8mm tall. Any ideas?
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