SciELO - Scientific Electronic Library Online

 
vol.42 issue4Modern ostracod assemblages from the Bahía Blanca estuary, Buenos Aires, ArgentinaThe Triassic Insect Fauna from Argentina. Blattoptera from the Los Rastros Formation (Bermejo Basin), La Rioja Province author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO

Share


Ameghiniana

On-line version ISSN 1851-8044

Abstract

ZUCOL, Alejandro Fabián  and  BREA, Mariana. Phytolith systematics, guideline for a classificatory system. A study case in the Alvear formation (lower Pleistocene), Entre Ríos, Argentine. Ameghiniana [online]. 2005, vol.42, n.4, pp.685-704. ISSN 1851-8044.

The classification rules to establish a phytolith systematics are outlined, in such a way allowing a precise treatment and delimitation of their ranks according to the botanical nomenclatural code. The morphological terminology used is explained and these rules are applied to the predominant phytolith morphotypes of the Alvear Formation in their type area, Puerto General Alvear (Diamante department, Entre Ríos). Its sediments were deposited during an semiarid interval in typical Lower Pleistocene pampean conditions. Globulolithum gen. nov. ( G. Sphaeroechinulathum sp. nov., G. sphaeropsilathum sp. nov.), Aculeolithum gen. nov. ( A. rostrathum sp. nov., A. Acuminathum sp. nov., A. ancistrathum sp. nov., A. aciculathum sp. nov.), Flabelolithum gen. nov. ( F. euflabelathum sp. nov., F. complanathum sp. nov.) and Macroprismatolithum gen. nov. ( M. psilaristathum sp. nov., M. Denticulathum sp. nov., M. ondulathum sp. nov., M. excavathum sp. nov.) are described. This assemblage represents the first fossil record for this formation.

Keywords : Phytoliths; Classification rules; Alvear Formation; Lower Pleistocene; Entre Ríos; Argentine.

        · abstract in Spanish     · text in Spanish

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License