Asteriacites lumbricalis from the Anisian (Middle Triassic) of Vallarsa (Southern Trentino, NE Italy) - A single, well pre- served fossil trace Asteriacites lumbricalis is here described. The trace, preserved as convex hyporelief, occurs in the Voltago Conglomer- ate (Voltzia Beds Auct.) and records the burrowing activity of ophiuroids on the substrate. The frequent finding of A. lumbriclis within marginal marine-to-brackish facies is consistent with the palaeoenvironment interpretation for this geographical sector during the Middle Triassic of a shallow marginal marine area influenced by terrigenous supplies, lifted by the Recoaro ridge. This discovery represents the first report of Asteriacites lumbricalis in the Middle Triassic of the Southern Alps.
Bernardi, M.; Avanzini, M. (2011). Asteriacites lumbricalis from the Anisian (Middle Triassic) of Vallarsa (Southern Trentino, NE Italy)., 88: 187-190.
Asteriacites lumbricalis from the Anisian (Middle Triassic) of Vallarsa (Southern Trentino, NE Italy)
BERNARDI, MASSIMO;AVANZINI, MARCO
2011-01-01
Abstract
Asteriacites lumbricalis from the Anisian (Middle Triassic) of Vallarsa (Southern Trentino, NE Italy) - A single, well pre- served fossil trace Asteriacites lumbricalis is here described. The trace, preserved as convex hyporelief, occurs in the Voltago Conglomer- ate (Voltzia Beds Auct.) and records the burrowing activity of ophiuroids on the substrate. The frequent finding of A. lumbriclis within marginal marine-to-brackish facies is consistent with the palaeoenvironment interpretation for this geographical sector during the Middle Triassic of a shallow marginal marine area influenced by terrigenous supplies, lifted by the Recoaro ridge. This discovery represents the first report of Asteriacites lumbricalis in the Middle Triassic of the Southern Alps.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
