Megaplanolites ibericus (ichnogen. et ichnosp. nov.), a new trace fossil from the Upper Jurassic (Uppermost Oxfordian) of Buena (Teruel Province, Iberian Chain, Spain). Palaeogeography Palaeoclimatology Palaeoecology, 61(3-4) 1987: 199-204. 202 [Zoological Record Volume 124]