New York Trilobits

[Calli99]

 

Hello everyone,

 

A few months ago I hosted the wonderful Sara the Travelling Ceratopsian and as such I received a set of fossils (and of course contributed some of my own to the box). I selected this set of New York trilobite pieces as I have literally no experience with trilobites and it's nice to add a whole new group to my collection .

 

The label says there are 5 trilobite pieces on 3 different bits of rock (however there are 6 I think).

 

3 bits are ID'd as Eldredgeops rana from the Wanakah Shale, Hamilton Group, Buffalo, NY. Middle Devonian

 

The other 2 are Cryptolithus cephalons from the Whetstone gulf formation, Lorraine Group, Lewis County, NY. Late Ordovician.

 

 My guess, by looking at the label locations that 1 & 2 must be the Cryptolithus cephalons Can anyone confirm please? 

 

 

 

 

 

 

[Kane]

The ones labeled 1 &2 seem to also be Eldredgeops rana. Cryptolithus generally has a short thoracopygidium with a wide cephalic brim, eyeless cephalon, and (in some species) an occipital spine.

 

 

[connorp]

Well I think there are either pieces missing or extra labels. These are all Eldredgeops partials, and the matrix is consistent across all three specimens, so I would assume these are all from the Wanakah Shale. Whetstone Gulf matrix is almost black from what I've seen. See here:

 

[Huntonia]

I agree, everything shown above is Eldredgeops, don't see any cryptolithus.

[Calli99]

Thanks everyone for your help, maybe the wrong label got slipped in by mistake!