TITLE

Tafonomía del gasterópodo cf. Donaldina robusta (Heterobranchia: Streptacididae) del Pensilvánico Medio, Formación La Joya, Sonora, México

AUTHOR(S)
Gómez, E. Catalina; Buitrón, S. Blanca; Vachard, Daniel
PUB. DATE
March 2010
SOURCE
Revista de Biología Tropical;mar2010, Vol. 58 Issue 1, p183
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
Gastropods are an important component in most of the fossil record; however, investigations have focused mainly on the characterization of the tafofacies and signatures in determined environments. We present qualitative and quantitative taphonomic data for the gastropod cf. Donaldina robusta assemblages from the La Joya Formation of the Sierra Agua Verde, Sonora State, (NW) Mexico. We analyzed 176 shells. Good preservation received a high taphonomic grade (A) and poor preservation a D. The shells were complete in 72% of cases (taphonomic grade B). Less than 10% are corroded or are parallel to the layer (grade A). This rock is petrographycally classified as wackestone, sedimentologically it is characterized by middle sorting (grade B) and low grading (grade A). The fossiliferous assemblage grades as A and B. Biostratinomic features of the skeletal assemblage are characteristic of sedimentologic concentrations of autochthonous-parautochthonous elements at the accumulation site. There was minimal reworking and transport in an environment of low energy, locally produced during a short period of accumulation.
ACCESSION #
50283644

 

Related Articles

  • El conodonte darriwiliano Lenodus variabilis (Sergeeva) en la Precordillera Central de San Juan, Argentina. HEREDIA, Susana; MESTRE, Ana // Instituto Superior de Correlacion Geologica, Serie Correlacion G;Jan2013, Vol. 29 Issue 1, p81 

    Elements of the key species Lenodus variabilis (Sergeeva) have been recovered from samples of the San Juan Formation which is cropping out in Cerro La Chilca section, Central Precordillera (San Juan). These limestones correspond to the last 15 m of this unit and they are composed by packstone-...

  • Late Cretaceous--Eocene Geological Evolution of the Pontides Based on New Stratigraphic and Palaeontologic Data Between the Black Sea Coast and Bursa (NW Turkey). Özcan, Zahıde; Okay, Aral I.; Özcan, Ercan; Hakyemez, Aynur; Özkan-Altiner, Sevınç // Turkish Journal of Earth Sciences;Nov2012, Vol. 21 Issue 6, p933 

    The Late Cretaceous--Eocene geological evolution of northwest Turkey between the Black Sea and Bursa was studied through detailed biostratigraphic characterization of eleven stratigraphic sections. The Upper Cretaceous sequence in the region starts with a major marine transgression and lies...

  • Cambrian Burgess Shale--type deposits share a common mode of fossilization. Gaines, Robert R.; Briggs, Derek E. G.; Zhao Yuanlong // Geology;Oct2008, Vol. 36 Issue 10, p755 

    Although Cambrian Burgess Shale-type (BST) biotas are fundamental to understanding the radiation of metazoans, the nature of their extraordinary preservation remains controversial. There remains disagreement about the importance of the role of early mineral replication of soft tissues versus the...

  • Carbonate-hosted Avalon-type fossils in arctic Siberia. Grazhdankin, Dmitriy V.; Balthasar, Uwe; Nagovitsin, Konstantin E.; Kochnev, Boris B. // Geology;Oct2008, Vol. 36 Issue 10, p803 

    Avalon-type fossils are crucial to understanding the origin of Phanerozoic ecosystems, but their usual occurrence in volcaniclastic and siliciclastic facies greatly limits their paleobiological resolution. The unique carbonate-hosted assemblage of the Khatyspyt Formation, on the Olenek uplift of...

  • Pyritized radiolarians and siliceous sponges from oxygen-restricted deposits (Lower Toarcian, Jurassic). Reolid, Matías // Facies;Jul2014, Vol. 60 Issue 3, p789 

    In Lower Toarcian marls and marly limestone deposits from the South Iberia Paleomargin (Fuente Vidriera section, Betic Cordillera, southern Spain), siliceous skeletons of radiolarian and spicules of hexactinellid sponges are preserved in pyrite. The original siliceous skeletons (hydrated...

  • Proliferation of Early Triassic wrinkle structures: Implications for environmental stress following the end-Permian mass extinction. Pruss, Sara; Fraiser, Margaret; Bottjer, David J. // Geology;May2004, Vol. 32 Issue 5, p461 

    Lower Triassic strata in the western United States and northern Italy have yielded the first reported occurrence of microbially mediated wrinkle structures in shallow subtidal siliciclastic paleoenvironments since the Cambrian. We hypothesize that wrinkle structures formed under reduced...

  • Rafting through time. Hart, Stephen // Science World;9/2/94, Vol. 51 Issue 1, p16 

    Focuses on the layering of the Grand Canyon in Arizona due to the flow of water bodies. Age of inner rock layers; Presence of dinosaur fossils in the rocks; Layers of sedimentary rock; Bedload movement; River habitats. INSET: Why don't all rivers carve Grand Canyons?..

  • Hot rocks driven underground. Stokstad, Erik // New Scientist;8/10/96, Vol. 151 Issue 2042, p17 

    Explains the reasons for the intense heat of radioactive rocks beneath mountain ranges such as the Himalayas, according to Audrey Huerta of the Massachusetts Institute of Technology. Insulation of the rocks; Process of the heat build-up; Temperature ranges; Process known as accretion.

  • Sizing up the sub-Tommotian unconformity in Siberia. Knoll, Andrew H.; Kaufman, Alan J. // Geology;Dec95, Vol. 23 Issue 12, p1139 

    Presents data taken from sedimentary rocks in the western Anabar region, northwestern Siberia. Sub-Tommotian unconformity in southeastern SIberia; Anabar lithostratigraphy and biostratigraphy; Chemostratigraphic correlation; Stratigraphic and evolutionary implications.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics