Term Name:	calcar avis of the lateral ventricle
Synonyms:	CalA, calcar, calcar avis, calcarine spur, ergot, Haller unguis, hippocampus minor, minor hippocampus, Morand spur, pes hippocampi minor, unguis avis
Definition:	On the medial wall of the posterior cornu of the lateral ventricle is a longitudinal eminence, the calcar avis (hippocampus minor), which is an involution of the ventricular wall produced by the calcarine fissure. It is sometimes visible on ultrasonogram.
Ontology:	Uberon Ontology [UBERON:0035970]