Do you have any idea on this, it looks like a tooth?

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Marc Philippe

Might it be a piece of plant cuticle ? The tip of a coriaceous leaf with involute margin ? The surface looks patterned, any stomatal cells ?

Bradai Mohammed El Amine

Marc Philippe it's an idea! you can notice the edge and how furrows are symetrical. At the center, a hypodermic needle tip shaped-like form, more like a glande for secretion!

Bruno Ferré

Marc is right! it is a piece of vegetal organism, most likely the edge of a seed.

Manabendra Nath

May be consolidation of marly sediment.

Victoria Keitelman

I agree with the vegetal origin of the sample, seems like a seed or a capsule

Reza Hanifzadah

the origin of this debries probably is from chitinous material?

Michel Krief

The tip of a fossilized date ?

Volodymyr Grytsenko

Do you show other side (lock like opal - pseudomorphosa)?