There are many index foraminiferas for the Upper Jurassic. How about echinoderms? I need tocontact a geologist

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There are many index foraminiferas for the Upper Jurassic. How about echinoderms? I need tocontact a geologist

2006-08-26 03:35:21 · 2 answers · asked by gilamichael 1 in Science & Mathematics ➔ Earth Sciences & Geology

2 answers

I don't believe they are widely used. I guess the problem with echinoderms is that they are much much rarer than forams. But you are right with your analogy - they are both benthic (in the Jurassic) and if forams are used there is no reason why echinoderms couldn't be used, when available too.

You might try searching on the website below. Good luck!

2006-08-27 07:24:52 · answer #1 · answered by Anonymous · 0⤊ 0⤋

try

2006-08-26 04:31:34 · answer #2 · answered by dianed33 5 · 0⤊ 0⤋