THE FOSSIL ACRIDIDAE FROM THE OLIGOCENE OF IZARRA (ALAVA, SPAIN) - THE ANTIQUITY OF GREGARIOUS BEHAVIOR (ORTHOPTERA, CAELIFERA)

Authors
ARILLO A ORTUNO VM
Citation
A. Arillo et Vm. Ortuno, THE FOSSIL ACRIDIDAE FROM THE OLIGOCENE OF IZARRA (ALAVA, SPAIN) - THE ANTIQUITY OF GREGARIOUS BEHAVIOR (ORTHOPTERA, CAELIFERA), Geobios, 30(2), 1997, pp. 231-234
Citations number
16
Categorie Soggetti
Paleontology
Journal title
Geobios → ACNP
ISSN journal
00166995
Volume
30
Issue
2
Year of publication
1997
Pages
231 - 234
Database
ISI
SICI code
0016-6995(1997)30:2<231:TFAFTO>2.0.ZU;2-9
Abstract
In this paper fossil Acrididae from Izarra (Alava, Spain) are studied. The site is dated as Oligocene and this is the oldest record of this family found in Spain. In this site Acrididae represent around 20 % of all the fossil insects. Commonly, in Tertiary sites, Caelifera occur as isolated specimens. The large percentage in Izarra could represent the oldest evidence of gregarious behavior between locusts.