This was the first fossil of
Corydoras which was discovered in Tertiary
rock by Professor T. D. A. Cockerell of the University
of Colorado, Boulder in 1925. The discovery was in
Sunchal, Juyuy province, from the Maiz Formation of
Argentina dating from the late Paleocene period (61-66
million years). Lineage: If alive
today this species would beplaced
in Lineage 1. A revision would have had them they
staying as Corydoras (Lacépède,
1803) with the type species of C. geoffroy
La Cépède, 1803. Remarks:
The green Tertiary rock measured 32mm and the imprint
27mm and it bears the outline of a Corydoras
(Sands,D. 1983) What was noticed was that a flaw in
the rock suggested that the dorsal spine was longer
(Isbrücker) and the problem of the one dimensional
shape of the fossil made it the subject of a new species,
Corydoras revelatus Cockerell, 1925. It is
now housed in the British Natural History Museum,
London.
Common
Name:
Fossil Cory
Synonyms:
None
Family:
Callichthyidae
Distribution:
South America:
Argentina, Jujuy district, Sunchal, from the Maiz
Formation.
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