@article{fdi:010082085,
  title = {{E}ocene caviomorph rodents from {B}alsayacu ({P}eruvian {A}mazonia)},
  author = {{B}oivin, {M}. and {M}arivaux, {L}. and {A}guirre-{D}iaz, {W}. and {C}ustodio, {M}. {A}. and {B}enites-{P}alomino, {A}. and {P}ujos, {F}. and {R}oddaz, {M}artin and {S}alas-{G}ismondi, {R}. and {S}tutz, {N}. and {T}ejada-{L}ara, {J}. {V}. and {Y}ans, {J}. and {A}ntoine, {P}. {O}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {P}aleogene record of caviomorph rodents has substantially increased over the last decades, and their evolutionary history better understood by the discovery of their earliest representatives, so far recorded in several pre-{D}eseadan localities in {P}eruvian {A}mazonia. {W}e report here the discovery of new caviomorph fossils from the {B}alsayacu area in {P}eru ({TAR}-55/{TAR}-55bis, {TAR}-76 and {TAR}-77 localities, {S}an {M}artin {D}epartment). {T}he study of this new material reveals the occurrence of four caviomorph taxa in these localities: {B}alsayacuy huallagaensis gen. et sp. nov., {C}hachapoyamys kathetos gen. et sp. nov. and {C}aviomorpha gen. et sp. indet. 1 and 2. {I}t allows the revision and refinement of taxonomic assignments of previously described specimens. {T}he first three taxa have a primitive dental pattern, as that characterizing stem {C}aviomorpha recorded in pre-{D}eseadan localities of {P}eru ({E}ocene localities of {C}ontamana and ?late {E}ocene/early {O}ligocene {S}anta {R}osa). {W}e support here an {E}ocene age for the {B}alsayacu section due to the complete absence of morphologically derived taxa representing modern caviomorph superfamilies. {B}y the presence of derived characters in {B}alsayacuy and {C}hachapoyamys compared to {C}anaanimys maquiensis and {C}achiyacuy contamanensis from {CTA}-27 ({C}ontamana, {P}eru; late middle {E}ocene), the {B}alsayacu section may document a time interval slightly younger than {CTA}-27 (which further yields {C}hachapoyamys cf. kathetos) and older than those of {S}anta {R}osa and {T}arapoto-{S}hapaja, likely documenting latest middle or early late {E}ocene times. {T}hese low-latitude stem caviomorph faunas provide new insights into the early evolutionary history and paleodiversity of that group immediately before the rise of modern superfamilies.},
  keywords = {{R}odentia ; {S}ystematics ; {B}iostratigraphy ; {P}eru ; {S}outh {A}merica ; {PEROU} ; {AMAZONIE} ; {BALSAYACU}},
  booktitle = {},
  journal = {{P}alz},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[26 p.]},
  ISSN = {0031-0220},
  year = {2021},
  DOI = {10.1007/s12542-021-00551-0},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082085},
}