ecological data from a modern trackway.

from the Pilcomayo River near General Diaz in search of microvertebrate remains from vertebrate skeletons less than 5mm in size.

 in the brush near General Diaz.

Rhea Americana near General Diaz.

at their field camp in the Paraguayan Navy base in Pozo Hondo.

mired in a muddy avulsion deposit near General Diaz.

of the mired caiman Caiman yacare from General Diaz.

Pilcomayo River near Pozo Hondo Paraguay.