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Hello, I really just wanted to get some opinions on this fossil I saw online. It's already been sold but it was going for a good price! Is it real? Dimensions were listed as 5.6" tall, found in Morocco. It's from a dealer that seems legitimate but I can't help but be skeptical because of the price! So sorry, I'm very new to the fossil community. Thank you for your time.

My wife and I found this and have no idea if this is a tooth looks like a gum line to me but my knowledge is basically nothing please help

Here's a 1" tooth found in Florida. It looks narrower than I'd expect for an alligator, and there are also striations which I believe are prominent in crocodiles. Would it be a crocodile?

Hello, I found this piece of bone in Ruwais, Abu Dhabi, UAE (United Arab Emirates). I have found many crocodile scutes in the area, which are Miocene in age. I was wondering if this bone was a piece of crocodile skull or jaw. It has some very weird holes, which reminded me of the crocodile osteoderms. I talked to a zooarcheologist who specialises in fossils in my area before I picked up the fossil, he said that they do find bones with worm borings in them, so I am not sure on what this is.

I found this tooth while prepping some of my fossils from the American Fossil quarry near Kemmerer, WY. This is actually in the same plate as a partial stingray that I've been trying to piece back together! I didn't even know the tooth was there until today, weeks after our trip to the quarry! It is very hard, shiny, and completely 3-dimensional. Has some ridges running longitudinally from the base (visible in picture), but these fade out and the top half is very smooth. No serrations. 1cm long, 2-3mm wide. Some quick googling makes me think Crocodile Tooth - there is a picture on FossilsForSale.com that is pretty much identical, and is listed as a crocodile.

I'm sure many of you are aware of the issue concerning discerning between a croc tooth and a gator tooth. So this is my attempt to answer it, now that I've attained a varied collection. First, I will start with the popular generalizations, then I will list each of my crocodile and gator teeth and assess each one. With said data, I will hopefully deduce the best method for discernment. Though this is not meant to be comprehensive, I hope it can be used as a general guideline for identifying crocodylian teeth. The answer is not as clear-cut as you might surmise... Generalizations: -Croc teeth are more curved; gator teeth are more straight (possibly as a result of eating more fish, whereas gators eat more turtles?). This is why you can see a croc's teeth when its mouth is closed (the teeth curve around the outside of the snout and jaw) and not a gator's. -Gators have two 'seams' (carinae) 180° from each other, whereas crocs either have multiples or none. -croc teeth are more conical and sharp; gator teeth are generally blunt. Observations: Pallimnarchus pollens (crocodile) from the Pleistocene of Australia (images 1-3): -two carinae 180° from each other -sharp/pointy -curved -ovoid base Pallimnarchus pollens (crocodile) from the Pliocene of Australia (images 4-5): -two carinae 180° from each other -sharp/pointy -slightly curved -conical base Goniopholis sp. (crocodile) from Torres Vedras, Jurassic of Portugal (image 6): -multiple striations -sharp/pointy -slightly curved -conical base Alligator mississipiensis (gator) from northern Florida, Pleistocene (images 9-11): -two carinae 180° from each other -blunt (it may have been sharp at one point) -curved -conical base Alligator mississipiensis (gator) from Marion Co., Florida, Pleistocene (images 12-15): -two carinae 180° from each other -sharp/pointy -straight (not including the root) -ovoid base Alligator mississipiensis (gator) from the Pleistocene of Florida (images 16-17): -two carinae 180° from each other -sharp but rotund -straight -ovoid base Alligator mississipiensis (gator) from the Pleistocene of Florida (image 18): -two carinae 180° from each other -sharp/pointy -slightly curved -conical base Alligator mississipiensis (gator) from Bone Valley, Florida, Late Miocene (images 7-8): -two carinae 180° from each other -blunt (from wear, but was likely never sharp/pointy due to the amount of force it was using [blunt teeth would have been better for such force distribution and would have minimized wear over sharp teeth]) -straight -conical base Edit note: I have changed the identification of this tooth to Alligator mississipiensis as a result of reading this paper and deducing that Alligator would be more plausible than Thecachampsa or a posterior Gavialosuchus: https://drive.google.com/file/d/0B1HtUwlDORQ0UXZVRGJncGhwVGc/view Deinosuchus rugosus (alligatoroid/crocodylian) from the Ripley Fm., Bullock County, Alabama, Cretaceous (images 19-21): -two carinae with crenulations 180° from each other; some evidence of 'proto-seams' along the base -sharp but rotund -slightly curved -conical base Deinosuchus rugosus (alligatoroid/crocodylian) from the Ripley Fm., Bullock County, Alabama, Cretaceous (images 22-25): -two carinae with crenulations 180° from each other -sharp but rotund -straight -ovoid base Discussion: While croc teeth may generally be more slender and curved, this is not a sure-fire way to identify a crocodylian tooth as being crocodile. Crocodiles do have blunt/rotund, straight, 'stubby' teeth posteriorly (towards the back of their jaw) and these look just like an Alligator's (unfortunately, I don't have any images of the 'button-looking teeth of a crocodile, but image 16 is one of an Alligator 's). Likewise, young Alligators are known to have sharp, pointy, curved teeth (see image 18; I've seen some even more curved). Carinae/striations seem to vary for crocodiles, ranging from none (I have no such specimen to provide a photo of, unfortunately), to a consistent two, to multiple striations. I would say it's a safe bet to assume a tooth is crocodile if it has no carinae or multiple striations, as this is not seen with Alligators (which always have two carinae). In those cases where a tooth has two carinae, further deduction could be done based on the rate of rarity of each per the location, robustness, and curvature if it isn't small. It is also of note that per the paper above (kindly provided by @Plax), the ratio of height to diameter in Alligator mississipiensis teeth did not exceed 1.6. However, do bear in mind that teeth with two carinae that are small, slender, and curved could be either a crocodile or young gator, just as a robust, straight, 'button'-like tooth with two carinae could be either a posterior crocodile's or Alligator 's. Again, such deductions should be taken into account with the rarity of each per a locality. Most importantly, keep in mind that form determines function -blunt, robust teeth indicate a diet of hard-shelled prey; sharp, pointy teeth indicate a diet of slippery prey. Ask yourself if the form better indicates the lifestyle of a crocodile or Alligator found in your area (get to know your specific species!). Then take the above into account. You should be reasonably able to deduce whether you'll see the owner of your tooth later or in awhile To summarize: 1. If the tooth has no carinae or has multiple 'ridges'/seams (striations), it's crocodile. 2. If the tooth has exactly two carinae 180° apart, is small, sharp/pointy, slender, and curves, it could be a small crocodile tooth or young Alligator's. Use the above tips to help you deduce which it is (curvature, robustness, form, lifestyle, rarity of either per the locale, etc.). If it is rather robust and curves, it may likely be Alligator, given its predominance in localities such as Florida. If it is slender and curves and the locale is known for croc teeth over gator, it is likely crocodile and so on and so forth, for example. If you are within the U.S., measuring the height to diameter ratio could help rule out Alligator if it exceeds 1.6. 3. If the tooth has exactly two carinae 180° apart and is straight and rotund, it could either be an Alligator tooth or posterior crocodile's. Use the above tips to help you deduce which it is (curvature, robustness, form, lifestyle, rarity of either per the locale, etc.). Generally speaking, unless you live outside the U.S., posterior crocodile teeth will be more uncommon, especially small ones. If it is large, rotund, and straight (or only curves slightly if it isn't 'button'-like), it's probably gator unless a crocodile with a diet for hard-shelled prey is common in the area. You can also use the height to diameter ratio for this one as well. 4. If you can't tell from these deductions, it's probably a Crocogator or Allidile tooth

Here's a 45 cm / 17.7 inch long bone from the Kem Kem of Morocco. I don't know what animal this belonged to. Maybe a theropod or crocodilian?

I have here a 25mm long tooth from Bone Valley, Polk County, Florida. It is from the Miocene. The seller advertises this as a crocodile tooth. To me, it looks alligator. I could be wrong; how might one differentiate?

Hey everyone! I recently found these items which are claimed to belong to Chthonosuchus lethei. However after some Googling, I found that this species doesn’t appear to exist outside of this dinosaur handbook. If possible, could you guys please help me identify what these species these specimens might belong to? There is a tooth, vert and what is said to be a juvenile jaw section. These are claimed to be from the Kem-Kem bed of Morocco. Many thanks. The set, with info card: Tooth: Vert: Jaw section:

Just found this at the base of a scree slope somewhere between Runswick Bay and Sandsend (too excited to wait until I’m home to take pictures with a ruler, sorry ) Pretty sure it looks like bone of some sort; can anyone confirm this and maybe identify it? Thanks for looking

I’m in need of some help on some old finds from Aurora. I thought shark nose, crocodile, whale tooth, what do you think.

Does anyone have a reference (or references) for how many and which species of crocodilians are present in the Two Medicine Formation? Was Brachychampsa present, and if so, was it the only alligatoroid in the Two Medicine to have those short, rounded teeth for crushing?

I celebrated my birthday recently with three days of shark tooth hunting along Maryland's Calvert Cliffs (Miocene exposures) and had a blast, despite the hot and muggy weather. I still haven’t found that elusive Meg, but I added some great new finds to my growing (since January) collection! Day 1: Matoaka For the first day, I went to Matoaka. Low tide was in the early morning and I wanted to beat both the heat (as much as possible) and crowds, so I got up bright and early, arriving just after sunrise. I’m pretty sure I was the first one on the beach as I didn’t see any footprints in the sand and didn’t see anyone else until I doubled back later in the day. I didn’t find any particularly large teeth but I did find several firsts: my first “cookie” (cetacean epiphysis); first barracuda tooth; first thresher shark (Alopias sp.) tooth, I think; and first Miocene croc tooth (a bit worse for wear). I also found a root worn Carchardon hastalis (above on the far right) and a few dozen other teeth (Hemipristis serra, Physogaleus contortus, Galeocerdo aduncus, Carcharhinus sp., and Negaprion eurybathrodono) in various conditions, shown below.

Is this a crocodile tooth? Location: Costa da Caparica, Portugal Thanks,

I won this a week or so ago on an auction. It was sold as undescribed pseudosuchia with a description "dog-faced crocodile". 2.33 inches long. From Ifzounane Formation, Kem Kem Basin. Description says it has been analyzed by experts as a new species. Nothing comes up for "dog-faced crocodile" other than this very fossil. Anyway, I meant to post it up here to get looked at but forgot about it until now. Anyway, here's some photos. If anyone has any ideas what it could be from, that be great It also came with a pair of nifty X-Ray type photos.

Hi everyone, I got these tooth from an auction. The only information I have that they are all from Kem Kem Basin and the number 1 as the seller description that Elosuchus sp. ~4cm but actually I'm not sure it label. So if anyone has any ideas of all of them that would be great. Thank for reading!

I'm quite interested in these small pieces. Sold as small reptile jaws from Kem Kem. The longer one is approximately 4cm, the shorter one is around 2cm. So very small jaws. I'm guessing, given the circular tooth sockets, they are from a small or juvenile species of crocodile? Or could they be from a type of lizard? If anyone can take a quick look, that would be great. I'm guessing they are much too small to get an actual species, but would be nice to know if croc or lizard. Thanks

Hello all, Recently my girlfriend and I went up to Ramanessin in New Jersey for a fossil hunt. After a while I came across this tooth! Upon trying to identify it I couldn't exactly figure out whether it was a crocodile (Thoracosaurus) or a mosasaur from the area. The tooth is more ovular in cross section. If more pictures are needed I can send them. Im leaning more towards Thoracosaurus. Thanks!

Hello, I recently found this small tooth (just under 1cm long). At first, I thought it might just be a weird crocodile tooth, since those are common here in Ruwais, Abu Dhabi, but upon further inspection, I saw that the tooth was hollow, unlike crocodile's teeth. Also, it lacked the vertical stripes. I am not sure what this could be, it has a small hooked section at the very tip, and inside of the curve there seems to be signs of wear. I hope it could be a monkey tooth, as they are exceptionally rare (only 2 monkey teeth have been found in all of Arabia), but it could well be some other animal.

Part 2 of my Fathers basement I have 2 crocodile skulls and one turtle. I believe they are Replicas? but the teeth on the crocodile are Fossils? once again I believe these are out of Morocco in the 70s or 80s? Thank you

Found these partial plates in the sawmill creek I am curious to know what the long pieces in the top right corner are found them with the plates if anybody with more information could help please found in Summerville ,South Carolina sawmill creek

During a trip to Egypt I found this potential fossil near the city of Aswan between the banks of the Nile River and Sahara Desert. I had thought it might have been a meteor and the sand fused around the meteor due to the Intense heat. But, I tested it with a magnet but there was absolutely no attraction. Therefore, I thought it might be a fossil given that I read about many fossils being discovered in the Sahara and the composition does appear to be any rock or stone that I've ever encountered. I assumed crocodile due to the spiky and bumpy texture, along with the historic prevalence of crocodiles in that region. What do you think this is? Thanks!

Went on a kayak trip on the Potomac for Father's Day with one of my kids. We spent a couple of hours around some paleocene spots. I found yet another lucky otodus right off the bat (sadly, one cusp missing). Between the two of us we then picked up a bunch of smaller teeth and a fair number of ray plates. We also got 3 croc teeth, including a nice fat one I found on my very last pass. I think we also got a small coprolite in there, but not 100% on that, and a chunk of turtle shell. All-in-all, not a half bad Father's Day trip!

Hi I purchased this tooth from a local shop and was just wondering if it is from a sarcosuchus either S. Imperator or S. Hartti? Is it even possible to tell species from a single tooth? They listed it as coming from Morocco and being from the Cretaceous ~100MYA. However the slip also mentions Elosuchus ~70MYA. My knowledge about prehistoric crocodiles is very limited. I’d be happy to just have a fossilised croc tooth as it would be my first and I didn’t pay heaps.