Sauropods

["Tomporowski, Steve" <Steve.Tomporowski@us.ms.philips.com>]

I remember reading from Uncle Bob's book that only one genus, Alamosaurus 
(hope I spelled it right) existed in the Cretaceous (or was it Late 
Cretaceous).  What's the current status of sauropods in the Cretaceous? 
 Have more species have been found?

Thanks much.....Steve