Hybodontid shark teeth

[Pterygotus]

Hello everyone 

 

I found these shark teeth a while ago in Dorset and I remember posting them on the forum after I’d just broken them into pieces . I’ve since, glued them together but am not sure of the species. They were found in the bathonian of the forest marble formation and the larger one measures 15mm while the smaller one measures 5mm. I’m really sorry for the bad photos but it’s the best I could get. I think the larger one is asteracanthus sp. but I’m totally in the dark with the smaller one. Does anyone know what species they are? 
 

thanks in advance

[siteseer]

When photographing shark teeth, it's best to get an apical view (a shot straight down at the biting surface of the crown) for one like the first one because the surface detail is how it's identified.  You also need a direct side view  - not at an angle like the view provided.  You would show an angle like that to highlight a tooth character not as easily seen from a direct side view.

 

The second tooth needs a direct side view and with better lighting.  Try using a piece of white cardboard to reflect light at that side so we can see any detail present in the crown.

 

The first one does look like an Asteracanthus but a good photo might at least narrow down the species to a couple of possibilities.

[Pterygotus]

8 minutes ago, siteseer said:

When photographing shark teeth, it's best to get an apical view (a shot straight down at the biting surface of the crown) for one like the first one because the surface detail is how it's identified.  You also need a direct side view  - not at an angle like the view provided.  You would show an angle like that to highlight a tooth character not as easily seen from a direct side view.

 

The second tooth needs a direct side view and with better lighting.  Try using a piece of white cardboard to reflect light at that side so we can see any detail present in the crown.

 

The first one does look like an Asteracanthus but a good photo might at least narrow down the species to a couple of possibilities.

Thanks . The first tooth was unfortunately found wearing out of the rock so the crown surface is long gone . I will try and get some pictures soon.

[Pterygotus]

20 minutes ago, siteseer said:

When photographing shark teeth, it's best to get an apical view (a shot straight down at the biting surface of the crown) for one like the first one because the surface detail is how it's identified.  You also need a direct side view  - not at an angle like the view provided.  You would show an angle like that to highlight a tooth character not as easily seen from a direct side view.

 

The second tooth needs a direct side view and with better lighting.  Try using a piece of white cardboard to reflect light at that side so we can see any detail present in the crown.

 

The first one does look like an Asteracanthus but a good photo might at least narrow down the species to a couple of possibilities.

Here are some more pics of no.2 .

[Fossildude19]

Cropped, enlarged and brightened.

 

  

 

    

[Pterygotus]

13 minutes ago, Fossildude19 said:

Cropped, enlarged and brightened.

 

       

Thanks, that’s made it much better to see and has actually brought out a lot of detail .

[Pterygotus]

The smaller tooth could be hybodus?