Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina

Lotagnostus is a biostratigraphically important late Furongian (late Cambrian) agnostoid trilobite whose interspecific and intraspecific variability is currently under discussion. In this context, type material of Lotagnostus atenuatus Rusconi, from an open-marine black limestone allochthonous block...

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Detalles Bibliográficos
Autor principal: Tortello, Marcelo Franco
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Naturales
Furongian
Trilobita
Lotagnostus
Mendoparabolina
Precordillera
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/141321
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-141321
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
Furongian
Trilobita
Lotagnostus
Mendoparabolina
Precordillera
Argentina
spellingShingle Ciencias Naturales
Furongian
Trilobita
Lotagnostus
Mendoparabolina
Precordillera
Argentina
Tortello, Marcelo Franco
Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina
topic_facet Ciencias Naturales
Furongian
Trilobita
Lotagnostus
Mendoparabolina
Precordillera
Argentina
description Lotagnostus is a biostratigraphically important late Furongian (late Cambrian) agnostoid trilobite whose interspecific and intraspecific variability is currently under discussion. In this context, type material of Lotagnostus atenuatus Rusconi, from an open-marine black limestone allochthonous block (La Cruz Olistolith) of Quebrada San Isidro, Precordillera of Mendoza, western Argentina, is revised herein. It includes several three-dimensionally preserved sclerites, allowing for an emended diagnosis of this species and comprehensive comparisons with other forms of Lotagnostus. Although to date L. atenuatus can be identified with confidence only at Quebrada San Isidro, it strongly resembles fragmentary material of Lotagnostus sp. indet., from late Furongian dysoxic upper slope facies of the Central Appalachians in eastern North America. The olenid Mendoparabolina brevicauda Rusconi, which is recorded in association with L. atenuatus, is also redescribed here. Mendoparabolina is closely allied with Wujiajiania Lu and Lin and Bienvillia Clark, differing by having a proportionately long and transversely bilobate pygidium with a posteriorly truncate axis and a postaxial median ridge.
format Articulo
Articulo
author Tortello, Marcelo Franco
author_facet Tortello, Marcelo Franco
author_sort Tortello, Marcelo Franco
title Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina
title_short Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina
title_full Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina
title_fullStr Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina
title_full_unstemmed Redescription of a <i>Lotagnostus–Mendoparabolina</i> faunule (Trilobita; late Furongian) from Quebrada San Isidro, Precordillera of Mendoza, Argentina
title_sort redescription of a <i>lotagnostus–mendoparabolina</i> faunule (trilobita; late furongian) from quebrada san isidro, precordillera of mendoza, argentina
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/141321
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bdutipo_str Repositorios
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