A new Chanidae (Ostariophysii: Gonorynchiformes) from the Cretaceous of Brazil with affinities to Laurasian gonorynchiforms from Spain.
Based on specimens originally referred to as "Dastilbe minor", a nomem-nudum, we describe a new genus of Chanidae †Nanaichthys longipinnus nov. gen. and sp. which exhibits several diagnostic characters such as the absence of orbitosphenoid and basisphenoid, anteriorly displaced quadrate-mandibular articulation, laterally expanded supraneurals, an acute angle between the preopercular limbs, expansion at the angle between the preopercular limbs, and a curved maxillary articular process. Its occurrence and supposed relationship within the Chanidae reinforce the influence of the Mediterranean Tethys over the Gondwanan main rift system prior to the Aptian/Albian highstands.
Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, São Francisco Xavier, Maracanã, Brazil.
Cesar R L
CR
Amaral
Paulo M
PM
Brito
D000818:Animals; D001938:Brazil; D005399:Fishes / Q000145:classification*; D010802:Phylogeny