A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana

The knowledge of Mesozoic fish faunas of the Southern Hemisphere is still inadequate; the diversity and evolution of the Late Jurassic marine ichthyofaunas of Argentina remain unclear. One fish recovered from the Tithonian levels of the Los Catutos Member of the Vaca Muerta Formation, southwestern A...

Descripción completa

Detalles Bibliográficos
Autor principal: Gouiric Cavalli, Soledad
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Naturales
Peces
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86119
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86119
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Peces
spellingShingle Ciencias Naturales
Peces
Gouiric Cavalli, Soledad
A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana
topic_facet Ciencias Naturales
Peces
description The knowledge of Mesozoic fish faunas of the Southern Hemisphere is still inadequate; the diversity and evolution of the Late Jurassic marine ichthyofaunas of Argentina remain unclear. One fish recovered from the Tithonian levels of the Los Catutos Member of the Vaca Muerta Formation, southwestern Argentina was considered a “caturid-like” halecomorph for almost 30 years. Recently, it was proposed that it could belong to the Pachycormiformes. A thorough comparative anatomical study of the material is conducted to test whether it could be included in †Caturidae or †Pachycormidae. The specimen is assigned to †Caturidae as a new genus and species: †Catutoichthys olsacheri (http://zoobank.org/urn:lsid:zoobank.org:act: 6884876C-075C-433B-90B7-74187FC04C26, registered on 1 June 2016). The new taxon is based on a unique character combination, three of which are exclusive to †Catutoichthys olsacheri among caturids–diplospondylous vertebral column with triangular basidorsals and welldeveloped and fan-shaped basiventrals; neural and haemal spines strongly inclined to the body axis at an angle of 14°; a large number of infrahaemals; rounded amioid-type scales with an unornamented free field. The new taxon provides anatomical information useful for further understanding the anatomy and evolution of caturid fishes.
format Articulo
Articulo
author Gouiric Cavalli, Soledad
author_facet Gouiric Cavalli, Soledad
author_sort Gouiric Cavalli, Soledad
title A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana
title_short A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana
title_full A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana
title_fullStr A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana
title_full_unstemmed A new Late Jurassic halecomorph fish from the marine Vaca muerta formation, Argentina, southwestern Gondwana
title_sort new late jurassic halecomorph fish from the marine vaca muerta formation, argentina, southwestern gondwana
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86119
work_keys_str_mv AT gouiriccavallisoledad anewlatejurassichalecomorphfishfromthemarinevacamuertaformationargentinasouthwesterngondwana
AT gouiriccavallisoledad newlatejurassichalecomorphfishfromthemarinevacamuertaformationargentinasouthwesterngondwana
bdutipo_str Repositorios
_version_ 1764820489325248513

Ejemplares similares