Large Shell Fossil discovered Devonian fish when cleaning

[oncandlewood]

oh what happenes is the area is supposed to be all devonian but erosion can bring down the river from other time lines. the shale fossils are most likely all devonian. i never saw any other bones in area like this one, just rocks with sealife 9cronids shells etc.from the bottom of ocean..cant explain the bone. was all devonian.is near river.

[Mahnmut]

Modern Bone shows fluorescence, but apparently only when it still contains protein.

https://www.ncbi.nlm.nih.gov/pubmed/27404617

 

It says short wavelengths in the article, but longwave UV is short compared to visible.

 

so its either very old and mineralized or rather new. .

 

Best Regards,

J

[Rockwood]

I was hoping it wouldn't come to this but it may be time to suggest the tap test.

Try tapping it lightly with something like a spoon. If it's mineralized the sound should be a high pitched ring like would be made by  fine china. Bone will give a lower pitched sound.

 

[Fossildude19]

A burn test may be needed. 

[Rockwood]

Oh no ! Not the stench !

[oncandlewood]

very hard high pitched with spoon

 

[oncandlewood]

ok burn test 0 stays same color doesnt burn used lighter.

[oncandlewood]

like porcelain very dense. doesnt smell

[oncandlewood]

ill look into geology of area. but may have come down river from New york .but nearby is NJ where they find duck billed dinosaurs etc. and rivers etc may have traveled other direction.  hmm   i have a big rock. maybe Dino bone maybe nothing. looks like worn black shark tooth stuck in it and scratch marks near tooth.  dont know if is or was a bone.was among black rocks but this is colored like a dinosaur bone so stood out.so kept it. river was low and i was kayaking.this was years ago. anyhow ill show some pics.maybe interestingly nothing or a kneecap of a mastadon etc. rock looks like been tumbled in the river.

[Rockwood]

32 minutes ago, oncandlewood said:

ll look into geology of area. but may have come down river from New york .but nearby is NJ where they find duck billed dinosaurs etc. and rivers etc may have traveled other direction.  hmm 

Second that hmm

If your estimate of the test results is accurate you need to take this to a museum. It's a truly unusual find. 

It would not be expected in Mesozoic sediments either.

[oncandlewood]

will consider thank you. did you see my latest bone

 

[Rockwood]

6 minutes ago, oncandlewood said:

will consider thank you. did you see my latest bone

 

Do me a favor. Try tapping it. Does it make the exact same sound as the other one ?

[oncandlewood]

Hello yes high pitch and over 5lbs.

[oncandlewood]

does that look to you like a worn black shark tooth stuk to outer?

 

[Rockwood]

8 minutes ago, oncandlewood said:

does that look to you like a worn black shark tooth stuk to outer?

 

No.

[oncandlewood]

just a mud rock or lava rock?near NJ there are old lava flows in area.

[Rockwood]

I'd go with mud stone.

[oncandlewood]

Hello my last fossil to share for tonight are very early trees fossils from PA.i have tree plants etc ferns.too

[oncandlewood]

i wanted to mention. long wave and short wave are a world of difference .short will burn your eyes easily. long can go through glass and is less as short has difficulty penetrate normal glass -makes a frosty sheen . also with the minerals and rocks some will illuminate under both (if do likely differently)some long uv only and others short only. visit Franklin NJ museums if get the chance and learn about them. i have a short wave plug in handheld lamp and large longwave display light and longwave flashlights. dark box for the short wave. display for longwave            https://geology.com/articles/fluorescent-minerals/             this teaches about uv . hard for my camera to show but is more colorful than shown. 

[cngodles]

As I understand it, very few dinosaur bones have been found in PA. Like 2, maybe.

[oncandlewood]

Yes nearby NJ just across the river the found the first full skeleton of duck billed dino and many others. PA  is mostly devonian.first fish and first mammals cronids shells etc. the small bone maybe a early mammal.

[Rockwood]

2 hours ago, oncandlewood said:

very early trees fossils from PA

 Sigillaria periderm. Mold fossil of a lycopod.

The first tetrapods are from the Devonian. Mammals come along in the late Triassic. Artiodactyls some time in the Tertiary. 

[Mahnmut]

7 hours ago, oncandlewood said:

i wanted to mention. long wave and short wave are a world of difference .short will burn your eyes easily. long can go through glass and is less as short has difficulty penetrate normal glass -makes a frosty sheen .

 

 

Hi Oncandlewood,

you are of course right that shortwave and longwave UV are very different things.

I only wanted to say that the "shortwave light" they mention in the article is longwave UV, 490 nm being the short end of the visible spectrum, but the long of UV.

As far as I know many minerals that show flourescence under long UV do so also under short UV (more brightly usually because of the higher energy) .

So I´d still say fluorescence alone doesn´t prove a bone to be fossil. (Although it makes it a very interesting fossil in case! )

The other tests point to solid fossilisation, the morphology clearly says mammal, the location says "unusual context", so I am curious where this leads.

Best Regards,

J

[Mahnmut]

Nice collection by the way.

And sorry, no idea about the other pieces.

J

[Rockwood]

22 minutes ago, Mahnmut said:

the location says "unusual context"

This just triggered a memory of a post that I found similarly perplexing. Bones had been found here in Maine which appeared to test as mineralized fossils, but would not be expected in this geological context. The poster contacted the state museum and was told that the bones tested that way because they had been cooked.