Echinoids, Lutetian, Fleury La Riviere

[dmguk]

Hello All !
I am trying to find the name for the small echinoids that are in the Eocene, Paris Basin matrix. I am breaking down material from Fleury La Riviere, I am ok with naming most of the gastropods, but can not find any information on the echinoids. The one shown is 5mm, although I have found them down to 1mm. All of the examples I have found seem to be the same species

Dank U !
David

[Bram]

Hello David,

Nice little echinoid! It looks like one from the order Clypeasteroida. Have you looked at Echinocyamus http://www.nhm.ac.uk/research-curation/ ... jsp?id=774 or maybe Fibularia http://www.nhm.ac.uk/research-curation/ ... jsp?id=764? Could you post more photo's of other specimens to, I'd love to see them.

Bram

[Bewerkt door Bram op 23-07-2010 om 16:21 NL]

[dmguk]

Hello Bram

Firstly, apologies for the poor picture, I only have a basic camera and it does not work too well for such small specimens. I have included a 2 euro cent coin for scale !

I have just soaked and sieved about 1kg of matrix, which gave about 200 small gastropods and bi-valves in perfect condition and about the same again broken, and 19 of these echinoids. The picture I posted earlier is the only one I have still in matrix.

[Bram]

Hello David,

I should try to go there sometime too From these photo's I can't help with the exact identification, but you should try searching some more for Echinocyamus, they really look like geologically younger ones that I have. Anyway, they're nice, tiny echinoids!

Bram

[Bewerkt door Bram op 24-07-2010 om 09:42 NL]

[dmguk]

Hello again.
I thought I should update this thread. I now think these are Scutellina lenticularis.
I am now up to 11mm, but still searching for a larger one.