Suborder Micrasterina Fisher, 1966

Family Incertae sedis

Remarks. The combination of generic features, particularly the presence of a marginal ‘peripetalous’ fasciole, intermittent horizontal fasciole bands and a rudimentary non re-entrant peripetalous fasciole clear of the distal ends of paired petals, clearly distinguish the new genus Murraypneustes from virtually all other taxa assigned to the Micrasterina, in particular the 22 genera included in the Asterostomatidae Fisher, 1966 . Only one of these genera, Asterostoma Agassiz, 1847, has tentatively been retained in the Asterostomatidae (together with Stomaporus Cotteau, 1888, a genus originally assigned to the Brissidae Gray, 1855) by Smith et al. (2003). Of the remaining 21 genera, Smith et al. have conditionally reassigned 13 to other families, only six of which are included in the Micrasterina . The remaining eight are listed as incertae sedis or as belonging to an unnamed taxon. Until a detailed revision of these latter genera is published, it is considered imprudent to assign the new genus to a specific family.