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Re: Anyone know what formations these are from?



In a message dated 9/3/00 6:59:05 AM EST, mickey_mortimer@email.msn.com 
writes:

<< Asiamericana asiatica >>


Nessov lists "distribution" for this species as Coniacian of central Kysylkum 
(Uzbekistan). Other specimens (undescribed) referable to the genus 
Asiamericana occur in the Santonian to early Campanian of Kazakhstan, also 
Maastrichtian of North America (citing Estes 1964, fig. 69).