Birthday fossil hunting trip (Cretaceous of Belgian & Dutch Limburg)

[ziggycardon]

22 hours ago, Indagator said:

I agree with hemiaster but to determine if it is a hemiaster prunella or koninckanus i need pics of the side. Prunella is more flatter(and less rare) then koninckanus. 

I'll try to make some more pictures in the coming days  

[Quer]

This is a Diagnosis of H.koninckanus from A,Smith in this paper:

 

"DIAGNOSIS: Like H.prunella, but differing in the following ways: (i) test more elongate, with width 75-85% of test lenght, rather than almost wide as long; (ii) in profile, the posterior face is undercut and slopes inwards slightly and the tallest point lies posterior of the apical disc; (iii) the anterior petals are less divergent in smaller individuals, forming an angle of ca. 90-100º; (iv) the labral plate projects slightly more over the peristome."

 

From what I see, I think it's H.koninckanus