Nasal compartmentalization in Kogiidae (Cetacea, Physeteroidea): insights from a new late Miocene dwarf sperm whale from the Pisco Formation Benites-Palomino A. es_PE Vélez-Juarbe J. es_PE Collareta A. es_PE Ochoa D. es_PE Altamirano A. es_PE Carré M. es_PE Laime M.J. es_PE Urbina M. es_PE Salas-Gismondi R. es_PE 2024-05-30T23:13:38Z 2024-05-30T23:13:38Z 2021
dc.description.abstract Facial compartmentalization in the skull of extant pygmy whales (Kogiidae) is a unique feature among cetaceans that allows for the housing of a wide array of organs responsible for echolocation. Recent fossil findings indicate a remarkable disparity of the facial bone organization in Miocene kogiids, but the significance of such a rearrangement for the evolution of the clade has been barely explored. Here we describe Kogia danomurai sp. nov., a late Miocene (c. 5.8 Ma) taxon from the Pisco Formation (Peru), based on a partially preserved skull with a new facial bone pattern. Phylogenetic analysis recovers K. danomurai as the most basal representative of the extant genus Kogia, displaying a combination of derived (incipiently developed and excavated sagittal facial crest) and plesiomorphic features (high position of the temporal fossa, and antorbital notch not transformed into a narrow slit). Furthermore, when compared with the extant Kogia, the facial patterning found in K. danomurai indicates differential development among the facial organs, implying different capabilities of sound production relative to extant Kogia spp. Different facial bone patterns are particularly notable within the multi-species kogiid assemblage of the Pisco Formation, which suggests causal connections between different patterns and feeding ecologies (e.g. nekton piscivory and benthic foraging). At c. 5.8 Ma, K. danomurai was part of a cetacean community composed of clades typical of the late Miocene, and of other early representatives of extant taxa, a mixture probably representing an initial shift of the coastal faunas toward the ecosystem dynamics of the present-day south-eastern Pacific. © 2021 The Palaeontological Association
dc.description.sponsorship Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec
dc.identifier.scopus 2-s2.0-85100348810
dc.language.iso eng
dc.publisher Blackwell Publishing Ltd
dc.relation.ispartof Papers in Palaeontology
dc.rights info:eu-repo/semantics/openAccess
dc.subject south-eastern Pacific
dc.subject Kogiinae es_PE
dc.subject marine mammals es_PE
dc.subject Messinian es_PE
dc.subject Peru es_PE
dc.subject Pisco Formation es_PE
dc.title Nasal compartmentalization in Kogiidae (Cetacea, Physeteroidea): insights from a new late Miocene dwarf sperm whale from the Pisco Formation
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication