Multi Shark Tooth Identification

[Joyce]

last one for #4

[Joyce]

unidentified #5

[Joyce]

unidentified #5 last pics

[Joyce]

And unidentified #6

[Joyce]

Last one for #6

[Joyce]

Thanks to everyone in advance and PLEASE feel free to correct me if my conclusions are wrong!!

[RickNC]

Do you have any reference books? Fossil Shark Teeth of the World by Joe Cocke is a decent one. Also the NC fossil club has a couple really good ones that will also apply to your area for the most part. Also elasmo.com is a good website to check.

[Joyce]

I've looked at elasmo and I have some references from the Aurora Fossil museum as well as Virginia State Parks but the few I just have no idea. I've aloso googled my finers to the bone with comon species. I can't decide exactly what they are supposed to be. I just can't match every feature to satisfy myself. I, however, did see another pos on another forrum about the goblin shark tooth and I am pretty certain about that but was maybe just looking for some confirmation.

Edited August 12, 2012 by Joyce

[sixgill pete]

I thought this is a goblin shark. Please feel free to correct!

this tooth appears to be Carcharius taurus, assuming if they came from either NC or Va , they are from Miocene/Pliocene deposits. the only goblin it possibly matches is Scapanorhynchus texanus and it is a cretaceous shark. it would help all of us to possibly ID these better if we had more information as to where found, the deposit and the age of the deposit if known.

Edited August 12, 2012 by sixgill pete

[sixgill pete]

I thought these may have been cow shark or whale shark teeth but really unsure.

More pics, same teeth

a couple more

the tooth on the left i am unsure of. the right tooth may possibly be a Hemipristis serra (snaggletooth shark) symphyseal tooth, but I cannot be sure. both of these teeth are well worn and broken, you may never get them ID'd. They are definitely not whale shark nor cow shark in my opinion.

Edited August 12, 2012 by sixgill pete

[sixgill pete]

I thought these guys may have been Isurus Oxyrhincus?

These three teeth appear to be very worn Carcharius taurus.(sand tiger)

Edited August 12, 2012 by sixgill pete

[sixgill pete]

Guessing this might be long fin mako????

this tooth is either another short fin mako, Isurus oxyrinchus or some type of sand tiger. there appears to be a broken cusp on the side with the root still there. Again it is broken and worn, so I cannot be sure.

[sixgill pete]

_{Thought this may be short fin mako?}

Isurus retroflexus, extinct longfin Mako.

[sixgill pete]

I think these are front teeth on a hemi?

all three are hemi lowers.

[Joyce]

this tooth appears to be Carcharius taurus, assuming if they came from either NC or Va , they are from Miocene/Pliocene deposits. the only goblin it possibly matches is Scapanorhynchus texanus and it is a cretaceous shark. it would help all of us to possibly ID these better if we had more information as to where found, the deposit and the age of the deposit if known.

It was found in Aurora, NC. Reject from PCS Mine.

[Joyce]

I'm thinking that the unidentified #2 group (a-c) are small Cosmopolitodus hastalis. (This was also from PCS mine)

[Joyce]

What was not found from PCS reject was found in Virginia along the rivers. I do believe that the locations are Eocine, Miocene and Pliocene.

Pete your help so far is greatly appreciated! Maybe my problem is that I'm trying to specifically identify stuff that is unidentifiable due to to wear and tear.

Edited August 12, 2012 by Joyce

[sixgill pete]

unidentified

1- Carcharhinus obscurus; Dusky Shark

2a- some type of mako I believe, very worn and broken

2b- Isurus ?hastalis

2c- another Isurus; maybe desori

3- Carcharhinus leucas; bull shark

4- Isurus oxyrinchus

5- the three with no roots could be several different species not enough to ID. the tooth on right is Isurus desori

6- to broken to ID

[sixgill pete]

I'm thinking that the unidentified #2 group (a-c) are small Cosmopolitodus hastalis. (This was also from PCS mine)

sorry not hastalis

Pete your help so far is greatly appreciated! Maybe my problem is that I'm trying to specifically identify stuff that is unidentifiable due to to wear and tear.

that is what makes it so hard if not impossible to put positive ID's on these teeth. I can only give a best guess.

Edited August 12, 2012 by sixgill pete

[Joyce]

You must have been doing this for a LONG time. I have the hardest time matching them up with pictures. Like all the different makos....any tips of just plain ol practice?

[Joyce]

AND

THANK YOU!!!

[cfin1974]

I think the teeth u think are isurus oxyrinchus are goblin shark front teeth. front teeth of a goblin are thin and the side teeth are wide check elasmo.com they have a guide maybe an expert will chime in. nice finds though

[Sharks of SC]

I think the teeth u think are isurus oxyrinchus are goblin shark front teeth. front teeth of a goblin are thin and the side teeth are wide check elasmo.com they have a guide maybe an expert will chime in. nice finds though

They're not old enough to be goblins - theyre Miocene

[Joyce]

That is true. The only one I THOUGHT was goblin was because the root was wide set and turned out at the ends which seemed more goblin than sand tiger BUT I went to elasmo and a couple other sites, stared for about 30 minutes (ha) and can maybe see it as a cuspidata lower lateral.

Thanks cfin and CBK!

[sixgill pete]

You must have been doing this for a LONG time. I have the hardest time matching them up with pictures. Like all the different makos....any tips of just plain ol practice?

Well, I have been up to this for a year or two, as far as ID'ing teeth; it is just something that over time gets easier as you see more teeth, learn more about the formations and geologic ages and enlist the help of others, thus learning from them. That is the great thing about this forum, there are so many people with more knowledge of this hobby than I.