What is "leufuichthys"

Leufuichthys is an extinct genus of clupeomorph fish which existed in Patagonia, Argentina during the late Cretaceous epoch ( Turonian or Coniacian stage). It is known from the holotype – MUCPv 371, an incomplete specimen missing most of the cephalic skeleton and from the paratypes – MUCPv 344 incomplete specimen lacking head; MUCPv 346, incomplete specimen lacking most of skull; MUCPv 347, specimen bearing scales; MUCPv 348, incomplete specimen with skull and part of trunk. Leufuichthys was recovered from the Portezuelo Formation of the Rio Neuquén Subgroup ( Neuquén Group). It was first named by Valéria Gallo, Jorge O. Calvo and Alexander W.A. Kellner in 2011 and the type species is Leufuichthys minimus.