Lyme Regis, UK - odd pyrite fossil help please!!

[nickR]

Hello,

 

I went on a trip to Lyme Regis, U.K. last week and came back with some lovely pyrite ammonites and a small ichthyosaurs vertebrae. However we also found this. I’m not sure it’s a full pyrite piece (6cmx6cm) as there is an impression of an ammonite however there are these pyrite cone shapes. Are these just Echinoids Or have I got really lucky with some shark teeth? (very unlikely I know!). I only came across this last one via the National History Museum fossil app which has a picture of a Hybodus delabechei teeth and it looks very similar from a top down view on to the tooth cusps.

 

There are also a number of black specks which look like fish scales which I have seen in coprolite fossils, but may well not be!

Really hoping someone could help with an ID or any ideas… It’s got me baffled.

Many thanks in advance.

 

Kind regards

N
 

Edited April 12, 2022 by nickR
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[Fossildude19]

Welcome to the Forum.

 

These look like brachiopods or bivalve shells, to me.
Wait for some other opinions, though.

[Tidgy's Dad]

Look like the remains of rhynchonellid brachiopods to me. 

Calcirhynchia calacarea is the most common, but these seem to have too many ribs. 

[nickR]

14 hours ago, Fossildude19 said:

Welcome to the Forum.

 

These look like brachiopods or bivalve shells, to me.
Wait for some other opinions, though.

Amazing thank you 

[nickR]

14 hours ago, Tidgy's Dad said:

Look like the remains of rhynchonellid brachiopods to me. 

Calcirhynchia calacarea is the most common, but these seem to have too many ribs. 

Amazing thank you so much.