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Show Us Your Jaws/mandibles


Fossil Claw

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I have to admit that mandibles have so far eluded me in the Peace River. Even teeth with small fragments of the jawbone attached have still been out of my grasp (so far--but I'm feeling lucky for next season ;)).

The only mandible that I've found was volunteering at the Thomas Farm site up near Gainesville. During last year's dig there I was lucky enough to find a small carnivore jaw among the ubiquitous horse fossils that dominate the site. This left mandible is from a mustelid (badger-like animal) named Leptarctus ancipidens from the Miocene. It currently resides in the FLMNH collection as UF 295000. I was out of the country during the shortened 2015 digging season but you can bet I'm going to make plans to volunteer again during the 2016 season.

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Cheers.

-Ken

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Asian Woolly Rhino jaw added to my collection.

Thinking about posting one of my Woolly Rhino jaws to the trade section. Interested in a Mammoth jaw section with tooth.

If you are wondering, that is a temporary a taped on label.

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How about some Jurassic Park material, partial jaw sections of pristine unerupted teeth of Allosaurus fragilis

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  • 4 months later...

Canis familiaris

Mandible Wild Dog.
Found: Carpathians, Romania
Type: Lower jaw Wild Dog
Latin name: Canis familiaris
Epoch: Pleistocene
Dating: 25,000 years old
Mandible is 15 cm long

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Here is my favorite upper-skull from Platecarpus ptychodon. It prepped out of the matrix so well I decided to leave is just as it was with no restoration or repairs. If you look close you can even see the pterygoid teeth still in place. Not my showiest piece but one of my favorites.

Nice!

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Juvenile oreodont jaw, Oligocene Era, White River Formation, Badlands of South Dakota. Very complete one side of oreodont mandible, very thin and delicate, an especially good example about 4 inches in length.

Oreodont is my second fav mammal. Right after mastodon.

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Here's one of mine: Mandibles of Trigonias sp. (Rhinocerotidae) from the Chadronian of the White River Badlands:

Love it!

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Well...

I only just got this piece in the mail like, half an hour ago. Should make for a fun prepping project. Dyrosaurus phosphaticus

I'm not sure yet if I will remove it from the matrix or leave it in though. I'll see once I clean it up a bit.

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I also have some nice Khouribga Mosasaur jaws.

Prognathodon sp. right side dentary

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Prognathodon sp. pterygoid jaw

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Fairly rare Halisaurus walkeri dentary fragment

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And a Mosasaur jaw I haven't identified yet.

A Pterosaur jaw fragment from Kem Kem.

Alanqa saharica

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Woolly Mammoth jaw fragment from the North Sea.

Mammuthus primigenius

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Olof Moleman AKA Lord Trilobite

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Those are wonderful examples above..

Here are 2 jaw photos .....but without any knowledge as to what they are,.. or where they are from...or how old they might be.

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Here are a few of mine... The first photo shows part of the White River section of my display cabinet. There is all sorts of stuff in here.

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There are many rabbit (paleolagus) jaws and skulls in the background. Top right, dark jaw on light rock is a carnivore (?) from the Eocene of WY... no teeth, so tough to ID. Bottom right, part of a Poebrotherium (Oligocene Camel) jaw. Above that, two Hesperocyon palates. The center of the three clear containers has a couple of Miocene bat jaws from France,above that a Cainotherium jaw from the same site. In the bottom left area are several Paleocene and Eocene mammal jaws.. they don't show up too well. But here is a close-up of one of them.

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The second one shows a few jaws that happen to have associated skulls... Lepticits on the left and Hesperocyon on the right.

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Except for the Cainotherium, these are all self collected and prepped.

Edited by jpc
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And now for some crocodilians.

This is a fun piece that maybe I have showed before. It is uncompleted (as much of my stuff is). It is a sample of an Eocene bone-bed. This block has turtle and crocodile pieces preserved in blue, brown and white-ish. These bones are pretty small... the jaws are about three inches (8cm) long.

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Your challenge is to find two croc jaws in this... clue: the bones here are quite well preserved, but the teeth are lousy, which is truly unusual.

Here is the answer to one of the jaws. Bone in red, teeth in yellow and empty alveoli in green.

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And here is a slightly crushed croc jaw...two views. When I found this one, I thought it was maxilla, it is so wide, but preparing it told meit is thelower jaw. The bi\g clue is the sine-wave shape of the alveolar ridge... the part where the teeth were/are.

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And an almost toothless little fellow... again viewed from both sides. Compare the shape of this one with the one above highlighted by red, green and yellow. In the old days i would have called this Diplocyon, but from what I hear, North American Eocene crocs are different from European ones and Diplocyon is a European genus.

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Edited by jpc
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  • 1 month later...

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The Bulldog Fish

Xiphactinus audax

86 - 84 mya (late Cretaceous)
Smoky Hill Chalk | Gove County, Kansas, USA

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Turtle mandible

Lytoloma sp.

72.1 - 66 mya (late Cretaceous)

Ouled Abdoun, Morocco

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Hyena partial jaw

Ictitherium sp.

12.7 - 5.3 mya (Miocene)

Gansu Province, China

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Halisaurus jaw

H. cf. walkeri

70.6 - 66 mya (late Cretaceous)

Ouled Abdoun, Morocco

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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Ichthyosaur... Lower Jurassic Planorbis zone 2oomyo

Somerset....

Some great jaws guys....

Cheers Steve... And Welcome if your a New Member... :)

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Ichthyosaur... Lower Jurassic Planorbis zone 2oomyo

Somerset....

Some great jaws guys....

This takes the cake!

Any more pictures?

Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday!

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Cheers Guys....Thanks...

Its a very interesting specimen being of fantastic preservation where its entire stomach contents have been preserved.... As well as being surrounded by ammolite type ammonite preservation... you could say its an ammolite Ichthyosaur from a rare horizon...The carcass rolled during decay and put a 'spiral' shape in the verts making quite a display specimen...

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Stomach contents showing recognisable types of fossil squid hooks....

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Heres another jaw....

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Juvenile Rhyzodont... Westphalian, Upper carboniferous

Cheers Steve... And Welcome if your a New Member... :)

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Steve, that is a stellar Ichthyosaur fossil! Thanks for sharing. Did you find and prep the piece?

You could start your own museum, or at least start charging your friends admissions. Haha

~Charlie~

"There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK
->Get your Mosasaur print
->How to spot a fake Trilobite
->How to identify a CONCRETION from a DINOSAUR EGG

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