ID requested: Miocene sharkteeth from Rumst (Belgium)

[ziggycardon]

Hi everyone,

saturday I went on my 2nd fossil hunting trip with my fossil club to the Wienerberger quarry in Rumst in the Rupel area near Antwerp (Belgium).

We hunted mainly in a thin Miocene layer dating back to the Burdigalian around 20.43 - 15.97 million years ago.

We found many shark teeth, most of which are C. hastalis, but there are a few I can't quite identify as shark teeth are not really my area of expertise and I was not acquainted with the location until my visit.

So I was hoping some experts could me out or someone who is familiar with the species from the location.
I did send an email to one of the excursion leaders from the trip, but he admitted not being a sharkteeth expert himself either and couldn't help me much further with ID's.
So any help would be welcome.

 

So the first batch of teeth are what I all believe to be C. hastalis. I am pretty confident with my ID on them but the other teeth are a mystery for me.

 

These two teeth are pretty beaten up. The tooth on the right has no enamel layer anymore and I doubt an ID is impossible. 
But the tooth on the right could be beat-up C. hastalis but I am not sure, it also kinda looks like a pretty beat-up Carcharocles angustidens. The latter can be found at the location and are usually found in the bad condition due to the fact that they were present in a now lost layer a little bit older than the one were most shark teeth were. 

But as said before I am not an expert and I am just purely speculating with the little info on the location I have.

 

I don't really know how to ID these teeth.

Are they C. hastalis but located on different locations in the jaws than the previous C. hastalis teeth or do these belong to a different species?

 

Then there are these 3 teeth that I don't know how to ID

 

We also found a few small shark teeth of which I believe they might belong to a different species than C. hastalis

 

And then the last tooth is this one, on first sight it kinda looks like a C. hastalis tooth but when you take a closer look you can see that the edges are serrated. 
So I wonder whether anyone know what species this could be?

 

Well that were all, I would really appreciate some help for their ID's

Thank you in advance! 

[Darktooth]

Top tooth in pic 5 looks like a thresher to me. 

[Fossildude19]

I took the liberty of brightening and enlarging the first picture.   

 

[FossilNerd]

I’m sorry to say that I can’t help much with identifying your shark teeth, but I am glad to see that you were able to get out and hunt again! 

[ziggycardon]

20 hours ago, Darktooth said:

Top tooth in pic 5 looks like a thresher to me. 

Thank you, I've looked up images of teeth and they do indeed look very alike and they apparently are present at Rumst  

 

16 hours ago, FossilNerd said:

I’m sorry to say that I can’t help much with identifying your shark teeth, but I am glad to see that you were able to get out and hunt again! 

Yes me too! Me and my girlfriend had an amazing day hunting, we can't wait till next time  

[ziggycardon]

Thank you all for the replies. 
I've gotten my hands on an article that describes the teeth from the location as well as a website with some ID from the location.
And I think most of the teeth are now ID'd.
All the teeth in photo's 1 - 4 are C. hastalis.

The 3 teeth in photo 5 are probably all Isurus retroflexus, which is a common find in Rumst.

The 2 middle teeth in photo 6 probably belong to Odontaspis sp., I don't know about the 2 outer teeth though.

And after some research I am quite confident that the serrated tooth belongs to Carcharomodus escheri.

[Natalie81]

Belgiansharkteeth is a very helpful website, give it a try 

[ziggycardon]

On 20-11-2019 at 9:30 AM, Natalie81 said:

Belgiansharkteeth is a very helpful website, give it a try 

Yes thank you, I did came across this website during my search and it was very helpfull, one of only two websites with some info on sharkteeth on that location