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By:
Bolt, John R., 1940-
Field Museum of Natural History.

Publication info:
Chicago :Field Museum of Natural History,1977.

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: i
• Linked record requirement:

CONTROL FIELD

• Control Field 001: 225312

CONTROL FIELD

• Control Field 005: 20071022152256.0

CONTROL FIELD

• Control Field 008: 771011s1977 ilua b 00010 eng d

LIBRARY OF CONGRESS CONTROL NUMBER

• LC control number: 77076917

SYSTEM CONTROL NUMBER

• System control number: (OCoLC)ocm03333396

SYSTEM CONTROL NUMBER

CATALOGING SOURCE

• Original cataloging agency: YSM
• Transcribing agency: YSM
• Modifying agency: UIU
• Modifying agency: m.c.3

MAIN ENTRY--PERSONAL NAME

• Personal name: Bolt, John R.,
• Dates associated with a name: 1940-

TITLE STATEMENT

• Title: Cacops (Amphibia : Labyrinthodontia) from the Fort Sill Locality, Lower Permian of Oklahoma /
• Remainder of title page transcription/statement of responsibility: John R. Bolt --.

VARYING FORM OF TITLE

• Title proper/short title: Cacops from Lower Permian

PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)

• Place of publication, distribution, etc.: Chicago :
• Name of publisher, distributor, etc.: Field Museum of Natural History,
• Date of publication, distribution, etc.: 1977.

PHYSICAL DESCRIPTION

• Extent: p. 61-73 :
• Other physical details: 5 ill. ;
• Dimensions: 24 cm.

SERIES STATEMENT/ADDED ENTRY--TITLE

• Title: Fieldiana.
• Name of part/section of a work: Geology ;
• Volume number/sequential designation: v. 37, no. 3

SERIES STATEMENT

• Series statement: Field Museum of Natural History. Publication
• Volume number/sequential designation: 1264.

GENERAL NOTE

• General note: Caption title.

GENERAL NOTE

• General note: "June 30, 1977."

BIBLIOGRAPHY, ETC. NOTE

• Bibliography, etc. note: Includes bibliographical references (p. 73).

SUMMARY, ETC.

• Summary, etc.: The armored dissorophid (Superfamily Dissorophoidea) labyrinthodont amphibian Cacops aspidephorus is unusual in having a large otic notch closed posteriorly by the tabular. Cacops was previously known only from the "Cacops Bone Bed," Lower Permian of Texas. Poor preservation makes this material difficult to study. Excellently preserved, though disarticulated, Cacops material has now been recovered from the Fort Sill fissure fills, which are probably very close in age to the "Cacops Bone Bed." Identification of the Fort Sill material as Cacops is based on palatines (primarily), armor scutes, and quadrates; the latter are here described for the first time from Fort Sill. The Cacops quadrate resembles that of other dissorophoids in having a posterodorsal process, which is unusual in the marked anterior expansion of its dorsal end. Comparison with other dissorophoids having a closed otic notch shows that Cacops is not unique in this anterior expansion of the process. Orientation of the process can apparently be used to distinguish trematopsids with a slit-like, closed (by the tabular) otic notch, from dissorophids. At least one such trematopsid occurs at Fort Sill, and resembles Cacops in anterior expansion of the process. -- Ontogeny of Cacops is discussed, and it is concluded that: 1. Closure of the otic notch by the tabular occured [sic] early in the ontogeny; 2. Exclusion of the laterally-exposed portion of the palatine from the orbital rim, a feature unique to Cacops among known dissorophids, also developed early in ontogeny; 3. Growth-stages of Cacops available at Fort Sill were all probably post-metamorphic. All were dentitionally normal labyrinthodonts, with no trace of the "lissamphibian" dental features found in the related Doleserpeton. This may be due, however, to the fact that Doleserpeton is represented by less-mature specimens than is Cacops.

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-).

SUBJECT ADDED ENTRY--TOPICAL TERM

• Topical term or geographic name as entry element: Amphibians, Fossil

SUBJECT ADDED ENTRY--TOPICAL TERM

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

SUBJECT ADDED ENTRY--TOPICAL TERM

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

ADDED ENTRY--CORPORATE NAME

• Corporate name or jurisdiction name as entry element: Field Museum of Natural History.

SERIES ADDED ENTRY--UNIFORM TITLE

• Uniform title: Publication (Field Museum of Natural History) ;
• Volume number/sequential designation: 1264.

000	03226cam a2200313 i 4500
001	225312
005	20071022152256.0
008	771011s1977 ilua b 00010 eng d
010	|a77076917
035	|a(OCoLC)ocm03333396
035	|9AAX-8298
040	|aYSM|cYSM|dUIU|dm.c.3
100	10|aBolt, John R.,|d1940-
245	10|aCacops (Amphibia : Labyrinthodontia) from the Fort Sill Locality, Lower Permian of Oklahoma /|cJohn R. Bolt --.
246	37|aCacops from Lower Permian
260	0 |aChicago :|bField Museum of Natural History,|c1977.
300	|ap. 61-73 :|b5 ill. ;|c24 cm.
440	0|aFieldiana.|pGeology ;|vv. 37, no. 3
490	1 |aField Museum of Natural History. Publication|v1264.
500	|aCaption title.
500	|a"June 30, 1977."
504	|aIncludes bibliographical references (p. 73).
520	3 |aThe armored dissorophid (Superfamily Dissorophoidea) labyrinthodont amphibian Cacops aspidephorus is unusual in having a large otic notch closed posteriorly by the tabular. Cacops was previously known only from the "Cacops Bone Bed," Lower Permian of Texas. Poor preservation makes this material difficult to study. Excellently preserved, though disarticulated, Cacops material has now been recovered from the Fort Sill fissure fills, which are probably very close in age to the "Cacops Bone Bed." Identification of the Fort Sill material as Cacops is based on palatines (primarily), armor scutes, and quadrates; the latter are here described for the first time from Fort Sill. The Cacops quadrate resembles that of other dissorophoids in having a posterodorsal process, which is unusual in the marked anterior expansion of its dorsal end. Comparison with other dissorophoids having a closed otic notch shows that Cacops is not unique in this anterior expansion of the process. Orientation of the process can apparently be used to distinguish trematopsids with a slit-like, closed (by the tabular) otic notch, from dissorophids. At least one such trematopsid occurs at Fort Sill, and resembles Cacops in anterior expansion of the process. -- Ontogeny of Cacops is discussed, and it is concluded that: 1. Closure of the otic notch by the tabular occured [sic] early in the ontogeny; 2. Exclusion of the laterally-exposed portion of the palatine from the orbital rim, a feature unique to Cacops among known dissorophids, also developed early in ontogeny; 3. Growth-stages of Cacops available at Fort Sill were all probably post-metamorphic. All were dentitionally normal labyrinthodonts, with no trace of the "lissamphibian" dental features found in the related Doleserpeton. This may be due, however, to the fact that Doleserpeton is represented by less-mature specimens than is Cacops.
550	|aFieldiana 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-).
650	0|aAmphibians, Fossil
650	0|aPaleontology|yPermian
650	0|aPaleontology|zOklahoma.
710	21|aField Museum of Natural History.
830	0|aPublication (Field Museum of Natural History) ;|v1264.