 I. praecursor ( also spelled I. precursor ) , described by E. Sauvage in 1876 from teeth from an unnamed Kimmeridgian ( Late Jurassic ) formation in Pas @-@ de @-@ Calais , France , is actually a sauropod , sometimes assigned to Neosodon , although the two come from different formations . 
 I. praecursor ( also spelled I. precursor ) , described by E. Sauvage in 1876 from teeth from an unnamed Kimmeridgian ( Late Jurassic ) formation in Pas @-@ de @-@ Calais , France , <a href='drop_aux' title='1'><mark>is</mark></a>actually a sauropod , sometimes assigned to Neosodon , although the two come from different formations . 
I. praecursor ( also spelled I. precursor ) , described by E. Sauvage in 1876 from teef from an unnamed Kimmeridgian ( Late Jurassic ) formation in Pas @-@ de @-@ Calais , France , actually a sauropod , sometimes assigned to Neosodon , although da two come from different formations .