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By:
Marshall, Larry G.

Publication info:
Chicago, Ill. :Field Museum of Natural History,1982

Contributing Library:
University of Illinois Urbana Champaign

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LEADER

• Record Status: c
• Type of record: a
• Bibliographic level: m
• Type of control:
• Undefined: a
• Encoding level:
• Descriptive cataloging form: a
• Linked record requirement:

CONTROL FIELD

• Control Field 001: 5386132

CONTROL FIELD

• Control Field 005: 20071023093200.0

CONTROL FIELD

• Control Field 008: 831216s1982 ilua b 000 0 eng

LIBRARY OF CONGRESS CONTROL NUMBER

• LC control number: 82082735

SYSTEM CONTROL NUMBER

• System control number: (OCoLC)ocm09120709

CATALOGING SOURCE

• Original cataloging agency: DLC
• Transcribing agency: DLC
• Modifying agency: UIU

GEOGRAPHIC AREA CODE

• Geographic area code: s------

LIBRARY OF CONGRESS CALL NUMBER

• Classification number: QE1
• Classification number: QE882.M3
• Item number: .F4 n.s., no. 12

DEWEY DECIMAL CALL NUMBER

• Classification number: 550 s
• Classification number: 569/.2
• Edition number: 19

MAIN ENTRY--PERSONAL NAME

• Personal name: Marshall, Larry G.

TITLE STATEMENT

• Title: Systematics of the extinct South American marsupial family Polydolopidae /
• Remainder of title page transcription/statement of responsibility: Larry G. Marshall --.

PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)

• Place of publication, distribution, etc.: Chicago, Ill. :
• Name of publisher, distributor, etc.: Field Museum of Natural History,
• Date of publication, distribution, etc.: 1982

PHYSICAL DESCRIPTION

• Extent: viii, 109 p. :
• Other physical details: 74 ill. ;
• Dimensions: 24 cm.

SERIES STATEMENT/ADDED ENTRY--TITLE

• Title: Fieldiana.
• Name of part/section of a work: Geology,
• Volume number/sequential designation: new ser., no. 12
• International Standard Serial Number: 0096-2651 ;

SERIES STATEMENT

• Series statement: Publication
• Volume number/sequential designation: 1339

GENERAL NOTE

• General note: "Accepted for publication April 16, 1982. [Published] December 30, 1982."

BIBLIOGRAPHY, ETC. NOTE

• Bibliography, etc. note: Includes bibliographical references (p. 89-91).

SUMMARY, ETC.

• Summary, etc.: Members of the extinct marsupial family Polydolopidae (superfamily Polydolopoidea) are known in South America from beds of Riochican (middle to late Paleocene), Casamayoran (early Eocene), and Mustersan (middle Eocene) age in Patagonia, southern Argentina; from beds of Riochican age in Brazil; and apparently from beds of Deseadan (early Oligocene) age in Bolivia. Five genera and 13 species, grouped in two subfamilies, are recognized. The Epidolopinae include Epidolops ameghinoi Paula Couto, 1952, from Riochican beds in Brazil, and an unnamed and undescribed epidolopine (apparently referrable to Epidolops) from Riochican beds in southern Argentina. The Polydolopinae include Polydolops clavulus meghino, 1902b (Casamayoran); P. kamektsen Simpson, 1935a (Riochican); P. rothi Simpson, 1936 (Riochican); P. winecage Simpson, 1935a (Riochican); P. serra Ameghino, 1902b (Casamayoran); P. thomasi Ameghino, 1897 (Casamayoran); P. mayoi Odreman Rivas, 1978 (Mustersan); Pseudolops princeps Ameghino, 1902b (Casamayoran); Amphidolops yapa (Simpson, 1935a) (Riochican); A. serrula Ameghino, 1902b (Casamayoran); Eudolops tetragonus Ameghino, 1897 (Casamayoran); and E. hernandezi sp. nov. (Casamayoran) -- all from Patagonia, southern Argentina. A specimen from beds of Deseadan age in Bolivia is tentatively referred to Polydolops? sp. indet. -- The species and genera are readily distinguished on the basis of absolute and relative size, structure of cheek teeth, presence or absence of various teeth, and formation by certain teeth of the "plagiaulacoid" or bladelike elements in the dentition (e.g., P2 and P3/P3 and trigonid of M1 -- Polydolops, Eudolops; P3/P3 and trigonid of M1 -- Amphidolops; P3/P3 -- Epidolops). An attempt is made to demonstrate that the large procumbent lower tooth in polydolopids is the canine and not an incisor. -- A historical review is given of polydolopid systematics. Nomenclature and relationships of included taxa are stabilized and clarified. Taxonomic limits of the Polydolopidae are defined; the group is shown to be monophyletic in origin. It is concluded that the Polydolopoidea and Caenolestoidea evolved independently from didelphoidlike ancestors in South America: any specializations shared by these groups, either with one another or with Australasian Phalangeroidea, are the result of convergence in evolution.

ISSUING BODY NOTE

• Issuing body note: 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.

SUBJECT ADDED ENTRY--TOPICAL TERM

• Topical term or geographic name as entry element: Polydolopidae.

SUBJECT ADDED ENTRY--TOPICAL TERM

• Topical term or geographic name as entry element: Paleontology
• Chronological subdivision: Tertiary.

SUBJECT ADDED ENTRY--TOPICAL TERM

• Topical term or geographic name as entry element: Paleontology
• Geographic subdivision: South America.

SERIES ADDED ENTRY--UNIFORM TITLE

• Uniform title: Publication (Field Museum of Natural History) ;
• Volume number/sequential designation: 1339.

DATA FIELD 994

• Code a: C0
• Code b: UIU