Wondering if someone could take a look at my pics please? I have a sea urchin fossil that i removed from the rock that was almost completely covering it. It was found on Charmouth Beach a couple of years ago. Any idea of identity and age? It's 5cm x 5 cm and 4cm thick.
Thanks for looking
A very nice find and spectacular images, thank you for sharing them with us.
Although Charmouth is famous for Mary Anning and the Jurassic vertebrates she found and also the lower Jurassic ammonites like Paracoroniceras, i think your specimen has come from the Cretaceous because it looks to have some flint matrix attached to it.
It is probably from the Gault or Greensand.
There's one very like yours here -
But that is un-named.
I suspect it is Pseudholaster or maybe Labrotaxis.
- http://www.discussfossils.com/forum/forum_posts.asp?TID=3679&title=east-devon-finds (search in the page for 'Pseudholaster')
- http://www.nhm.ac.uk/research-curation/research/projects/echinoid-directory/ (general echinoid ref.)
Thank you for this! I read them all, very interesting, i know more about sea urchins than i ever imagine i would now
Looks like a Pseudholaster. i was originally thinking Micraster or Epiaster but they both have grooved ambulacrum (i think!) and mine's a smooth top with one main groove down to its underside, forming the heart shape. If i understood the description of Pseudholaster correctly i'm happy with that.
Hughe thanks for your interest and effort.