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Abstract:

Abundant vertebrate coprolites collected from the Triassic Potrerillos, Cacheuta and Río Blanco formations (Cuyana Basin) are analyzed. The studied material includes both specimens originally described by Rusconi plus many new undescribed materials. Four morphotypes were identified on the basis of the morphological features of the coprolites as shape, surface texture, size and internal structure, among others. Morphotype A is characterized by spiral coprolites with also an internal coiled aspect and they contain numerous ganoid scales. Morphotype B includes coprolites with an amorphous homogeneous phosphatic internal structure, in contrast with those of Morphotype C which present a phosphatic granulate internal aspect. Finally, Morphotype D is characterized by an agglomeration of ganoid scales visible both externally and internally. The four morphotypes show similar sedimentological and taphonomic features that suggest that their producers inhabited the water bodies. Moreover, their phosphatic composition and inclusions of fish scales are considered unequivocal evidence of the carnivore diet of their producers. Aquatic vertebrates known by skeletal remains from the same levels are actinopterigian fishes and temnospondyl amphibians and are the more likely producers of the studied coprolites. Particularly, Morphotype A might be also related to dipnoans or coelacanths though morphotypes B, C and D can not be specifically related to any vertebrate group. Nevertheless, their morphological and compositional differences suggest quite dissimilar producers.

Registro:

Documento: Artículo
Título:Vertebrate coprolites from the Triassic of Argentina (Cuyana Basin)
Autor:Mancuso, A.C.; Marsicano, C.; Palma, R.
Filiación:Lab. Paleontologia de Vertebrados, Depto. de Cs. Geológicas, Fac. de Ciencias Exactas y Naturales, Pabellón II, Buenos Aires C1428 EHA, Argentina
Departamento de Ciecias Geologicas, Facultad de Cie. Exactas y Naturales, Pabellón II, Buenos Aires C1428 EHA, Argentina
Palabras clave:Argentina; Coprolites; Cuyana Basin; Lake deposits; Triassic; coprolite; fossil; Triassic; vertebrate; Argentina; Cuyana Basin; South America; Western Hemisphere; World; Amphibia; Coelacanthidae; Cuyana; Dipnoi; Pisces; Vertebrata
Año:2004
Volumen:41
Número:3
Página de inicio:347
Página de fin:354
Título revista:Ameghiniana
Título revista abreviado:Ameghiniana
ISSN:00027014
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v41_n3_p347_Mancuso

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Citas:

---------- APA ----------
Mancuso, A.C., Marsicano, C. & Palma, R. (2004) . Vertebrate coprolites from the Triassic of Argentina (Cuyana Basin). Ameghiniana, 41(3), 347-354.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v41_n3_p347_Mancuso [ ]
---------- CHICAGO ----------
Mancuso, A.C., Marsicano, C., Palma, R. "Vertebrate coprolites from the Triassic of Argentina (Cuyana Basin)" . Ameghiniana 41, no. 3 (2004) : 347-354.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v41_n3_p347_Mancuso [ ]
---------- MLA ----------
Mancuso, A.C., Marsicano, C., Palma, R. "Vertebrate coprolites from the Triassic of Argentina (Cuyana Basin)" . Ameghiniana, vol. 41, no. 3, 2004, pp. 347-354.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v41_n3_p347_Mancuso [ ]
---------- VANCOUVER ----------
Mancuso, A.C., Marsicano, C., Palma, R. Vertebrate coprolites from the Triassic of Argentina (Cuyana Basin). Ameghiniana. 2004;41(3):347-354.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v41_n3_p347_Mancuso [ ]