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Showing results for tags 'teeth'.
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From the album: Eocene vertebrates of Ukraine
Second upper anterior, upper lateral and lower first lateral. -
From the album: Eocene vertebrates of Ukraine
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Hello Everyone! I can honestly, finally, say that I'm beginning to figure out the fossil-enigma that is Summerville, SC. It is a strange land where fossil deposits start and end within a matter of feet - a few inches of glorious gravel separating the sandy, ghostly-grey Chandler Bridge and the compact brownish marl of the Ashley Formation. If, by some miracle, you can find a ditch with the exact right depth, enough width, a little flowing water within a fossil-bearing strata that hasn't been hit by a million other collectors, you just might be able to put something together. Thanks to some nasty weather and a couple of days off of work, I've managed to finally find some spots that fit the bill. The finds pictured below come from two creeks (of maybe 15 that I checked) over the course of the last two days. The angustidens were the obvious gems, with one shamer nearly four inches long and nearly four inches wide! All-in-all, its been a great couple of days and I couldn't be happier with my success. I'll be planning another trip in the near future! Take care and as always.. Happy hunting, SOSC
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- angustidens
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From the album: Albian vertebrates of Ukraine
Size 2 cm. -
Hi all, At the local market yesterday I bought these 4 teeth (in total for a very low price). All 4 are said to come from Morocco, but the seller didn't say the exact location. But I suppose that they are either from Kem Kem or Khouribga. Anyways I would just like your opinion on them (what species, 100% original or slightly reconstructed, anything I could do to "improve" them, etc). Thanks in advance! Best regards, Max Tooth #1: sold as a spinosaur tooth (so I suppose it's from Kem Kem).
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Hello dear users of the Fossil Forum! Please help me to identify the fossil. LOCATION: Russia, Volgograd city area GEOLOGY: Upper Cretaceous Series, Maastrichtian ASSEMBLAGE: the Finds in this place are shark teeth: Palaeogaleus cf. faujasi, Plicatoscyllium cf. minutum, Squatirhina, Carcharias gracilis, Pseudocorax affinis, the teeth of mosasaurs, the teeth of bony fish Enchodus, fold Chlamys, Foraminifera Nodosaria sp. DISCOVERY: the Gravel bed. Thank you. PS Finds are not unique, in different places of the region Volgograd city. Layers only Upper Cretaceous Series, Maastrichtian.
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How important is provenance?
Down under fossil hunter posted a topic in Is It Real? How to Recognize Fossil Fabrications
Well it has been a very long time since I have started a post on here (been too busy collecting) but I wanted to share my thoughts on establishing 'provenance' before a fossil purchase. What is provenance? Simply put establishing the provenance of a fossil is all about establishing its origin and includes things like: Where was it found (location)? Who found it? When was it found etc. This is also strongly linked to the value of the fossil for example two identical specimens one with solid provenance the other with nothing can be the difference between a fossil that is priceless and one that is worthless. In this same way a museum could potentially view a fossil given to them with no history as nothing more than a rock, as it has lost all scientific value. Good dealers do a great job collecting as much provenance as they can in order to get top dollar for their specimens, this might include only purchasing directly from the digger, providing in-situ photos of the fossil when it was discovered and/or prepared as well as very detailed location and collection data. Astute collectors also will understand that the better the provenance a fossil has the more valued and prized it will be. People sometimes underestimate just how easy it is to fake a fossil and we can get caught up trying to avoid undisclosed enhancements, repairs and restoration that we don't stop and ask all the right questions. Below is a simple table that I use (until today kept in my head) to help grade fossils in my collection as to how authentic they are and how strong their provenance is. It is important to note that the majority of my collecting is centred around dinosaur teeth and as such establishing correct id's is much harder than on some other groups of fossils. The horizontal line looks at who discovered the fossil and how many degrees of separation are there between you and that person, as well as looking into how trustworthy the seller is (have they been caught out in the past, have they sold other misrepresented pieces). This line looks at the people and relationships element and delves into the integrity, reputation and personal brand of the individual. The vertical line looks at the more practical aspects of the fossil itself and although I have used very brief descriptions this part is about how much homework have you the buyer done? Have you compared the specimen to others sold? Have you dug up journals or PDF's on that formation and the creatures that live in it? What diagnostic features will prove or disprove the id? Once a red flag is found its important to ask the question and seek clarification. Finally the colours... The colours simply represent the level of risk involved in making a purchase. Starting with BLUE as the least risky building all the way up to RED which in my opinion should be avoided at all cost. These colours are nothing more than a guide and there are multiple other considerations that could affect the level of provenance and all need to be considered. At the end of the day a perfect 5 inch theropod tooth that has no provenance and doesn't match could still be a great acquisition if the price is cheap enough. The "scores" in the boxes are just me playing around with formulas and overcomplicating things. Hopefully this has been a useful read and gives you all some deeper perspective on the subject, happy to hear peoples thoughts and comments if there are any :-)
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Trying to remove teeth and fill alveoli for an experiment.
spinoresearcher posted a topic in Fossil Preparation
Hi! I'm trying to run an experiment on a fossil which has had some prep work done on it. The teeth are glued into the alveoli. However, part of my experiment requires that I remove the teeth and fill in the alveoli. I was wondering how I could accomplish this in the least damaging way? There are some unerupted teeth present, which I know from having x-rayed the fossil. Thanks! -
I was going through a large group of very small Triassic coprolites today and came upon this. Since there was a beat up Koskinonodon tooth in with the coprolites, I'm wondering if this could be a jaw or maxillary fragment from a juvenile. The person who found the coprolites said that he found a lot of Koskinonodon teeth in the area as well some from Phytosaur, Apachesaurus, Coelophysis, Postosuchus, and Revueltosaurus. What do you all think? Jaw or maxillary? Amphibian, fish or something else? If this is amphibian, can anyone identify the bone above and to the left of the teeth? My cat votes amphibian @Carl check it out!
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I would like to get some fossils to seed some areas for both my sons to find some interesting things and to better learn the diversity of what is out there. I was thinking shark teeth , ammonites and trilobites stuff like that can any one help with this. I could ether trade or buy doesn't matter I'm just looking for a variety of stuff.
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Here are several teeth from Late Albian of Ukraine (Kanev region). Help with identification will be very appreciated. Other fossils from this site 1. Tooth is fairly worn, but it should preserve the original shape (no cusplets). Root is poorly preserved, but is it possible to determine who it came from? I am thinking about an early Anacoracid or a Carcharhiniform (Triakidae)? By the way, Anacoracids are extremely rare there, so there is really nothing for comparison. 2. Most likely a tiny Synechodus crown, but the shape looks weird for Synechodus. Could it be a Scyliorhinid? 3. Anacoracid? It has some serrations on the distal side. Also thought about Squaliform, but the root looks more lamnoid-like. 4. Scyliorhinid or Lamnoid?? 5. Almost 100% sure it is a Hemiscylliidae, but is it possible to determine the genus? I am leaning towards Chilloscyllium, but not sure.
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Went to Big Brook NJ for the first time this summer with the kids. Liked it so much we went back several times. For first timers we were very happy with the hauls. May look rather plain to the seasoned people here but wanted to share. Thanks, Jason
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A - lateral; B, C, D - anteriors. Anterior teeth have typical of Heterodontus V-shaped root and marked cutting edge. Unlike H. canaliculatus anteriors, anteriors of ‘H.’ upnikensis have more convex labial side (so that cutting edge is situated in the middle of the lateral surface) and no lateral cusplets. Crown generally widens near the base, so most teeth have regular triangle shape of a labial face. Teeth located closer to symphysis display more mesiodistally compressed crowns. Enamel is smooth on both faces. Lateral teeth are also different from H. canaliculatus: they have lower and shorter central occlusal ridge and lateral ridges are highly anostomosed on both sides, so that complete tooth ornamentation has a net-like appearance. ‘Heterodontus’ upnikensis is an enigmatic species. No associated tooth set has been found yet, consequently it is impossible to tell that a given set of laterals actually belong to ‘H.’ upnikensis. There is a possibility that lateral teeth described here as ‘H.’ upnikensis here belong to another Heterodontus species not represented by anteriors in Kanev collection. They were assigned to this species because there is generally some degree of tooth plan similarity between anteriors and laterals of the same species. Laterals described here have: 1) relatively weak and short central occlusal ridge; this trait is similar to ‘H.’ upnikensis shorter cutting edge because of lateral cusplet absence; 2) more bilateraly symmetrical crown shape and ornamentation across the central occlusal ridge than in H. canaliculatus; this feature is analogous to relatively equal thickness of labial and lingual face on ‘H.’ upnikensis anterior teeth. Also, anteriors of ‘H.’ upnikensis are a lot more common in studied locations than H. canaliculatus, and the same trend applies to two found Heterodontus lateral teeth morphotypes with H. canaliculatus teeth being a lot scarcer.
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From the album: Dinosaurs and Reptiles
Machaeroprosopus=Pseudopalatus? Bull Canyon FM, New Mexico -
From the album: Eocene vertebrates of Ukraine
Unidentified lamnoid anterior -
So I'm cruising the bottom in really, really strong current. We're talking get-out-your-screwdriver-and-hang-on-for-dear-life strong. I've got a butt-load of lead on me, though, so I'm able to make some headway with my screwdriver. I find a few smaller teeth and put them in my pouch--a real trick with the current hammering you. So the next small tooth I run across, a pretty little lower mako, I have a little argument with myself before picking it up. Finally I figure, what the hell, and grab it. While I'm putting it in my bag, a big, ghostly white triangle appears right under my nose. As I look, I realize it's a megalodon blade, half-buried in the sand. Darn thing is almost pure white, I only noticed after staring right at it for about ten seconds. If I hadn't stopped to grab that mako, never would've even noticed. So I put a finger under the blade, thinking, "there's no way this thing is whole, that would just be too perfect." I lifted. And whaddaya know, darn thing was all there! It dried beautifully. My first white meg. It comes in right at four inches.
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Couldn't fit the pic in my post. Cone shape objects I suspect are just rocks but wanted to pass it by the forum. Thanks, Jason
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From the album: Dinosaurs and Reptiles
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I thought these were horse teeth, but after some poking around I'm thinking they're bison teeth. Please, help with identification and geological era. I'm starting with photos of the two that look like bone, in what stage I don't know, but do have three more (one large and two small) that I believe to be completely fossilized teeth from the same animal. All were found in Bucks County, Carversville exactly, in or near a creek bed at the bottom of a ridge of cliffs, which, we've been told, is a very special geological location where finds are not typical of the surrounding area. Because I could not wait to get another photo with a point of reference for size, I must include my best estimation from memory: the larger piece is approximately 2" long and 1/2-3/4" deep and not quite 1 1/2" wide The smaller of the two pieces can be referenced by the larger, but is about the size of my index finger from the first knuckle to top. I'll wait to post the photos of the possible complete fossilized pieces, I'm sure I will need to be more diligent including all needed info in the photos I choose to post. For now, I hope this is enough, do tell!
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Intermediate tooth of S. macrota.
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Triassic shark teeth from the Rhaetian bone bed of Somerset, UK
Aurelius posted a topic in Member Collections
The coast of Somerset is famous for one of the exposures of the Rhaetian Penarth formation, which is better known from Aust, where it is better exposed. It contains many reptile bones, fish scales, shark teeth, fin spines, coprolites, that sort of thing. On my last visit I didn't find any of the blocks which contain large bones, but I did find some containing large numbers of tiny teeth and very small bones. These blocks can be broken down to reveal large quantities of fossils. These teeth are absolutely tiny, some as small as 1mm across and none bigger than 3mm. They can barely be made out by the naked eye, except as a shiny black dot on the rock. 75mp panorama of one of the larger teeth (approx 3mm) I placed this tooth on a magazine to illustrate scale. The letters are standard small print.
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From the album: Eocene vertebrates of Ukraine
3 intermediates, most likely from Striatolamia macrota. -
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)
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From the album: Eocene vertebrates of Ukraine
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From the album: Eocene vertebrates of Ukraine
A - female anterior B, C - female laterals
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