Asset Details

MbrlCatalogueTitleDetail

Do you wish to reserve the book?

TRIARTHRINID TRILOBITES (OLENIDAE) FROM THE MIDDLE AND UPPER ORDOVICIAN, PRECORDILLERA OF ARGENTINA

by VACCARI, NORBERTO E. , EDGECOMBE, GREGORY D. , CHATTERTON, BRIAN D. E. , WAISFELD, BEATRIZ G.

in affinities / Argentina / Arthropoda / Curvature / Fossils / Geology / Gualcamayo Formation / Instars / Invertebrata / invertebrate / La Rioja Argentina / Llanvirnian / Los Azules Formation / Marine / Middle Ordovician / Middle Ordovician epoch / morphology / New species / new taxa / Nonnative species / Olenidae / Ontogeny / Ordovician / Paleontology / Paleozoic / Pleurae / Porterfieldia / Porterfieldia acava / Porterfieldia maanssonae / Porterfieldia turneri / Precordillera / Ptychopariida / San Juan Argentina / South America / Taxonomy / Terraces / Thorax / Triarthrinae / Triarthrus / Triarthrus jachalensis / Trilobita / Trilobitomorpha / type specimens / Upper Ordovician / Whiterockian

2005

Yes Please

Hey, we have placed the reservation for you!

By the way, why not check out events that you can attend while you pick your title.

Oops! Something went wrong.

Looks like we were not able to place the reservation. Kindly try again later.

Are you sure you want to remove the book from the shelf?

TRIARTHRINID TRILOBITES (OLENIDAE) FROM THE MIDDLE AND UPPER ORDOVICIAN, PRECORDILLERA OF ARGENTINA

by VACCARI, NORBERTO E. , EDGECOMBE, GREGORY D. , CHATTERTON, BRIAN D. E. , WAISFELD, BEATRIZ G.

2005

Confirm

Do you wish to request the book?

TRIARTHRINID TRILOBITES (OLENIDAE) FROM THE MIDDLE AND UPPER ORDOVICIAN, PRECORDILLERA OF ARGENTINA

by VACCARI, NORBERTO E. , EDGECOMBE, GREGORY D. , CHATTERTON, BRIAN D. E. , WAISFELD, BEATRIZ G.

2005

Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy

How would you like to get it?

Submit

We have requested the book for you!

Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.

Oops! Something went wrong.

Looks like we were not able to place your request. Kindly try again later.

Journal Article

TRIARTHRINID TRILOBITES (OLENIDAE) FROM THE MIDDLE AND UPPER ORDOVICIAN, PRECORDILLERA OF ARGENTINA

VACCARI, NORBERTO E.,

EDGECOMBE, GREGORY D.,

CHATTERTON, BRIAN D. E.,

WAISFELD, BEATRIZ G.

2005

Overview

Middle and Upper Ordovician Triarthrinae from the Precordillera of San Juan, Argentina, include the Whiterock/Llanvirn Porterfieldia turneri (Baldis and Pöthe, 1995) and P. acava new species, and the early Caradoc Triarthrus jachalensis (Harrington and Leanza, 1957). Each of these species is described based on silicified material, including ontogenies, from the Las Aguaditas Formation. Porterfieldia maanssonae new species from the lower member of the Gualcamayo Formation (late Arenig) at Río Gualcamayo, San Juan Province, and Río Guandacol, La Rioja Province, is closely allied to P. turneri. Two protaspid stages are present in Porterfieldia, whereas mineralized protaspid stages are apparently lacking in Triarthrus jachalensis. Triarthrus jachalensis was capable of sphaeroidal enrollment by meraspid degree 2. Precordilleran species bear closest comparison to others from Spitsbergen (Porterfieldia acava n. sp. and P. parapunctata) and Sweden/Norway (Triarthrus jachalensis and T. linnarssoni).

Share this book

Add to My Shelf

Publisher

Cambridge University Press,Paleontological Society

Subject

/ Fossils

/ Geology

/ Gualcamayo Formation