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Mastodonte em depósitos marinhos da Praia do Penedo (Portugal)
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O achado de um dente de mastodonte, cf. Tetralophodon longirostris, em depósitos marinhos expostos na praia de Penedo Norte, na Península de Setúbal, permitiu datação rigorosa. Provém da camada 8 do corte, parte basal da sequência deposicional T1; data do início do Tortoniano, ca. de 11.6 Ma, com base em foraminíferos planctónicos (zona N14) e em 87Sr/86Sr e K/Ar. O dente de mastodonte parece pertencer a Tetralophodon longirostris, espécie conhecida em Portugal em depósitos continentais da primeira parte do Miocénico superior.
A mastodon tooth (cf. Tetralophodon longirostris) was collected in marine deposits exposed at Penedo Norte beach section in the Setúbal Peninsula. This finding allowed its accurate dating. It was found in bed 8 of this section, T1 depositional sequence that dates from basal Tortonian, ca. 11.6 Ma after N14 planctonic forams and 87Sr/86Sr and K/Ar ages. The concerned tooth seems to belong to Tetralophodon longirostris, a species already known in Portugal in continental deposits from the first part of Upper Miocene.
A mastodon tooth (cf. Tetralophodon longirostris) was collected in marine deposits exposed at Penedo Norte beach section in the Setúbal Peninsula. This finding allowed its accurate dating. It was found in bed 8 of this section, T1 depositional sequence that dates from basal Tortonian, ca. 11.6 Ma after N14 planctonic forams and 87Sr/86Sr and K/Ar ages. The concerned tooth seems to belong to Tetralophodon longirostris, a species already known in Portugal in continental deposits from the first part of Upper Miocene.
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Mastodonte Depósitos marinhos Tortoniano Portugal