T. Bolliger et al., PRELIMINARY-REPORT ON NEW FINDINGS OF PLI OCENE MAMMALS FROM THE HIGHER DECKENSHOTTER OF THE IRCHEL (KT ZURICH, SWITZERLAND), Eclogae Geologicae Helvetiae, 89(3), 1996, pp. 1043-1048
A new fauna of small vertebrates found in glacial gravels (''Hohere De
ckenschotter'') at Irchel-hill (Kt. Zurich, Switzerland) suggest a dep
osition age of late Pliocene (MN 17).