World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Systematics of the South American Marsupial Family Microbiotheriidae : Fieldiana, Geology, New Series: S, No. 10

By Marshall, Larry G

Click here to view

Book Id: WPLBN0001321579
Format Type: PDF eBook
File Size:
Reproduction Date: 2010

Title: Systematics of the South American Marsupial Family Microbiotheriidae : Fieldiana, Geology, New Series: S, No. 10  
Author: Marshall, Larry G
Volume: Fieldiana, Geology, new Series: s, No. 10
Language: English
Subject: Marsupials, Fossil -- South America, Microbiotheriidae, Mammals
Collections: Biodiversity Heritage Library Collection
Historic
Publication Date:
1982
Publisher: Chicago; Field Museum of Natural History

Citation

APA MLA Chicago

G, M. L. (1982). Systematics of the South American Marsupial Family Microbiotheriidae : Fieldiana, Geology, New Series: S, No. 10. Retrieved from http://www.cloud-library.org/


Description
University of Illinois Urbana-Champaign ; Fieldiana Zoology and Ornithological Collection ; University of Illinois Urbana-Champaign

Table of Contents
Members of the South American marsupial family Microbiotheriidae are known from Late Oligocene (Colhuehuapian) and Early Miocene (Santacrucian) age beds in Patagonia, southern Argentina, and in the Recent fauna from Chiloe Island, south central Chile, and from adjacent parts of Argentina. Two genera, Microbiotherium and Dromiciops, and seven species are recognized. Microbiotherium divisum (Ameghino, 1902e) is known only from the Colhuehuapian. M. acicula (Ameghino, 1891); M. patagonicum Ameghino, 1887; M. tehuelchum Ameghino, 1887; and M. gallegosense Sinclair, 1906 are knownl only from the Santacrucian. M. praecursor (Ameghino, 1898) is of unknown age and provenance, while Dromiciops australis (Philippi, 1893a) is known only from the Recent. These genera and species are distinguished primarily on the basis of absolute size, although relative size and minor structural differences in the canines, cheek teeth, and auditory bullae also have proven diagnostic. -- The taxonomy of other dedelphoid or supposed didelphoid taxa either referred to the Microbiotheriidae or implicated in the ancestry of this family are discussed. These include: Ideodelphys microscopicus Ameghino, 1902d (Casamayoran-Early Eocene); Coona pattersoni Simpson, 1938 (Casamayoran); E. gutierrezi (del Corro, 1977) (Casamayoran); and Pachybiotherium acclinum Ameghino, 1902e (Colhuehuapian). It is demonstrated that microbiotheres were among the syntypes of the caenolestid species Stilotherium dissimile Ameghino, 1887 (Santacrucian) and Phonocdromus gracilis Ameghino, 1894 (Santacrucian) ; Includes bibliographical references (p. 71-75) ; Members of the South American marsupial family Microbiotheriidae are known from Late Oligocene (Colhuehuapian) and Early Miocene (Santacrucian) age beds in Patagonia, southern Argentina, and in the Recent fauna from Chiloe Island, south central Chile, and from adjacent parts of Argentina. Two genera, Microbiotherium and Dromiciops, and seven species are recognized. Microbiotherium divisum (Ameghino, 1902e) is known only from the Colhuehuapian. M. acicula (Ameghino, 1891); M. patagonicum Ameghino, 1887; M. tehuelchum Ameghino, 1887; and M. gallegosense Sinclair, 1906 are knownl only from the Santacrucian. M. praecursor (Ameghino, 1898) is of unknown age and provenance, while Dromiciops australis (Philippi, 1893a) is known only from the Recent. These genera and species are distinguished primarily on the basis of absolute size, although relative size and minor structural differences in the canines, cheek teeth, and auditory bullae also have proven diagnostic. -- The taxonomy of other dedelphoid or supposed didelphoid taxa either referred to the Microbiotheriidae or implicated in the ancestry of this family are discussed. These include: Ideodelphys microscopicus Ameghino, 1902d (Casamayoran-Early Eocene); Coona pattersoni Simpson, 1938 (Casamayoran); E. gutierrezi (del Corro, 1977) (Casamayoran); and Pachybiotherium acclinum Ameghino, 1902e (Colhuehuapian). It is demonstrated that microbiotheres were among the syntypes of the caenolestid species Stilotherium dissimile Ameghino, 1887 (Santacrucian) and Phonocdromus gracilis Ameghino, 1894 (Santacrucian) ; Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-1978). Fieldiana Geology New Series No. 1 began June 29, 1979 ;

 

Click To View

Additional Books


  • The Point of View (by )
  • The Pension Beaurepas (by )
  • The Patagonia (by )
  • The Papers (by )
  • The Papers (by )
  • The Middle Years (by )
  • The Marriages (by )
  • The Liar (by )
  • The Lesson of the Master (by )
  • The Jolly Corner (by )
  • The Great Good Place (by )
  • The Great Condition (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from Cloud eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.