 I. dawsoni , described by Lydekker in 1888 , is known from two partial skeletons found in East Sussex , England , from the middle Valanginian @-@ age Lower Cretaceous Wadhurst Clay . It is now the type species of Barilium . 
 I. dawsoni , described by Lydekker in 1888 , is known from two partial skeletons found in East Sussex , England , from the middle Valanginian @-@ age Lower Cretaceous Wadhurst Clay . It <a href='drop_aux' title='1'><mark>is</mark></a>now the type species of Barilium . 
I. dawsoni , described by Lydekker in 1888 , is known from two partial skeletons found in East Sussex , England , from da middle Valanginian @-@ age Lower Cretaceous Wadhurst Clay . It now tdatype species of Barilium .