THALASSINOIDES AND ITS PRODUCER: POPULATIONS OF MECOCHIRUS BURIED WITHIN THEIR BURROW SYSTEMS, BOCA DO CHAPIM FORMATION (LOWER CRETACEOUS), PORTUGAL

CARLOS NETO DE CARVALHO; PEDRO ANDRADE VIEGAS; MÁRIO CACHÃO

doi:10.2110/palo.2006.p06-011r

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CARLOS NETO DE CARVALHO,^1,* PEDRO ANDRADE VIEGAS,² MÁRIO CACHÃO^3,4

¹aGeology and Paleontology Office, Geopark Naturtejo Meseta Meridional–European and Global Geopark, A
²bRua Olival Santo, Lote 1, 3o esquerdo, 2625-585 Vialonga, Portugal;
³cDepartment of Geology, Faculty of Sciences of the University of Lisbon, Campo Grande, C6 building,
⁴dGeological Centre, University of Lisbon, Campo Grande, C6 building, 4th floor, P-1749-016 Lisboa, P

^**Corresponding author

Abstract

This work describes the occurrence of numerous, nearly intact Mecochirus rapax populations within Thalassinoides suevicus burrows in the Lower Cretaceous Boca do Chapim Formation. This exceptional preservation allows for unquestionable attribution of a specific producer to a biogenic structure. Analysis of sedimentological features combined with functional morphology and ichnological inferences suggests that the unique preservation of the fauna resulted from river flood depositional events that buried successive Mecochirus populations in a shallow marine setting.

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CARLOS NETO DE CARVALHO, PEDRO ANDRADE VIEGAS, and MÁRIO CACHÃO "THALASSINOIDES AND ITS PRODUCER: POPULATIONS OF MECOCHIRUS BURIED WITHIN THEIR BURROW SYSTEMS, BOCA DO CHAPIM FORMATION (LOWER CRETACEOUS), PORTUGAL," PALAIOS 22(1), 104-109, (1 January 2007). https://doi.org/10.2110/palo.2006.p06-011r

Accepted: 1 August 2006; Published: 1 January 2007

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