Bioerosion structures in Crepidula (Mollusca, Gastropoda) as indicators of latitudinal palaeoenvironmental changes: Example from the marine Quaternary of Argentina

Bioerosion on Late Pleistocene Marine Mollusks: A Paleoclimatological and Paleoecological Comparison of MIS 7 and MIS 5e with Modern Beaches (Río Negro, Argentina)

“…Entobia, Oichnus and Gastrochaenolites are the dominant ichnogenera, increasing Meandropolydora and Caulostrepsis, which characterize an environment of clear water, increasing rocky and sandy substrate, decreasing water currents, being currently the Gulf of San Matías, a confluence zone between the Brazilian and Malvinas currents. (Lorenzo and Verde, 2004) North of Buenos Aires Province (Aguirre et al, 2011) South of Buenos Aires Province, Argentina (Charó et al, 2015) North of Rio Negro Province, Argentina (Charó et al 2015) MIS5e North Patagonia, Argentina (Richiano et al, 2015) This paper ( MIS 5e)…”

“…Bioerosion on marine mollusks has been studied worldwide (e.g., Bromley and D′Alessandro, 1987;Perry, 2000;Ruggiero and Annuziata, 2002;Ruggiero and Raia, 2010;Baarli et al, 2012), including in South America (e.g., Lorenzo and Verde, 2004;Paul and Herbert, 2004;Farinati et al, 2006;Domènech, 2008;Pereira Lopes, 2011;Richiano et al, 2012;Charó et al, 2015a, b;Rojas et al, 2014;Richiano et al, 2015Richiano et al, , 2017Allbalay et al, 2016;Charó et al, 2017). Recently, bioerosion features have been considered as paleoclimatic proxies (Charó, 2014).…”

“…The knowledge of the marine Quaternary malacofauna has largely been increased by the pioneering studies of Frenguelli (1928Frenguelli ( , 1945Frenguelli ( , 1950Frenguelli ( , 1957 and Richards and Craig (1963), among others. In Argentina, contributions in the study of marine shell fossils were numerous: concerning paleobiogeographic studies (e.g., Aguirre, 1993;Gordillo, 1998;Aguirre et al, , 2005Aguirre et al, , 2006Aguirre and Farinati, 1999;Gordillo et al, 2008;Charó, 2014); taphonomic studies (e.g., Cárdenas and Gordillo, 2009;Gordillo, 2009;Aguirre et al 2011;Boretto et al, 2013;Bayer et al, 2016); and bioerosion traces studies (eg., Farinati et al, 2006;Arregui et al, 2009;Charó et al, 2012bCharó et al, , 2015aCharó et al, -d, 2017Gordillo and Archubi, 2012;Richiano et al, 2012Richiano et al, , 2014Richiano et al, , 2015Richiano et al, , 2017Martinelli et al, 2013).…”

“…Whereas in the study area only two ichnospecies of Oichnus were found. Richiano et al (2015) described Late Pleistocene marine deposits along the Patagonian coast (40°49′S-49° 19′S). They reported two ichnogenera on Crepidula sp.…”