52 



M. RUTA 



Fig. 2 Juliaecarpus milneronim gen. et sp. nov. Late Ordovician, Upper Ashgill. Rawtheyan, Upper Ktaoua Formation. Morocco. Reconstruction of external 

 aspect. A, right lateral view of theca and aulacophore. B, ventral view of theca and aulacophore. C, dorsal view of theca and aulacophore. D, anterior 

 view of theca (aulacophore removed). E, posterior view of theca. F, schematic aspect of anterior thecal excavation showing apophyses and adoralia. G, 

 schematic reconstruction of most anterior part of dorsal thecal surface showing adoralia and dorso-lateral projections of M', and M,. Arrangement of 

 integument plates, cover plates, tectals and inferolaterals is hypothetical. 



