PREDATION TRACE FOSSILS IN A NEW SPECIMEN OF CAYAOA BRUNETI TONNI (AVES, ANSERIFORMES) FROM THE GAIMAN FORMATION (EARLY MIOCENE, CHUBUT, ARGENTINA)

Authors

  • Ricardo Santiago De Mendoza Universidad Nacional de La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), División Paleontología Vertebrados, Facultad de Ciencias Naturales y Museo, Paseo del Bosque s/n, B1900FWA La Plata, Argentina
  • Nadia S. Haidr Instituto de Biología de Organismos Marinos (IBIOMAR), CONICET, Boulevard Brown 2915, U9120ACD Puerto Madryn, Chubut

Keywords:

Predation traces. Cayaoa bruneti. Anseriformes. Gaiman Formation.

Abstract

Some trace fossils can be considered direct evidence of predatory activities. In this paper we present a new nearly complete tarsometatarsus of the early Miocene diving duck Cayaoa bruneti from Gaiman Formation, and we describe predation traces distributed on its surface. The fossil presents different sets of scores attributable to attack or scavenging of Hathliacynidae metaterians. The EDAX analyses of the mark surface compared with the unaltered surface of the bone showed no significant compositional differences. This is the first direct evidence of behavioral interaction between Cayaoa bruneti and other members of the fauna of Gaiman Formation.

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Published

2018-09-30

Issue

Vol. 55 No. 4 (2018)

Section

Paleontological Notes

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How to Cite

PREDATION TRACE FOSSILS IN A NEW SPECIMEN OF CAYAOA BRUNETI TONNI (AVES, ANSERIFORMES) FROM THE GAIMAN FORMATION (EARLY MIOCENE, CHUBUT, ARGENTINA). (2018). Ameghiniana, 55(4), 483–488. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/3111