Subcortical brain region lying anterior to the hippocampal formation in the temporal lobe and anterior to the temporal horn of the lateral ventricle in some species. It is usually subdivided into several groups. Functionally, it is not considered a unitary structure (MM).
Comment:
[homology-note] "One part of the striatum is called the archistriatum. (...) The archistriatum of fishes consists of several indistinctly segregated nuclei called the amygdaloid (...) complex. Tetrapods retain the structure, and in mammals the corresponding amygdala is a globular mass that tends to be ventral to the other basal nuclei.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0001277", ontology="VHOG", source="ISBN:978-0471090588 Hildebrand M, Analysis of vertebrate structure (1983) p.342", source="http://bgee.unil.ch/"}