Taphonomic comparison between two bivalves (Mactra and Brachidontes) from Late Quaternary deposits in northern Argentina: Which intrinsic and extrinsic factors prevail under different palaeoenvironmental conditions?

Aguirre, Marina Laura; Richiano, Sebastián; Farinati, Ester A.; Fucks, Enrique

doi:10.1016/j.quaint.2010.07.029

Cited by 20 publications

(6 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Chaney and DiMichele (2003) took a similar approach in their study of early Permian floras from the Clear Fork Group in north-central Texas by restricting their paleobotanical sampling to mudstone facies that accumulated in quietwater settings. The implication in these studies, and others of similar ilk (e.g., Gastaldo et al 2005;Aguirre et al 2011), is that sites sourced from the same facies, if sampled in similar manner, will yield assemblages that should be free from disproportionate taphonomic bias.…”

Section: Discussionmentioning

confidence: 79%

“…By design, an isotaphonomic study compares fossil localities that share “an equivalent suite of natural sampling conditions” and represent a “specific habitat or suite of habitats or facies” (Behrensmeyer et al 2000: p. 130). Sites are typically deemed isotaphonomic if they derive from the same facies and were exposed to the same potential biasing agents (e.g., Clyde and Gingerich, 1998; Chaney and DiMichele 2003; Aguirre et al 2011). The implication is that sites that satisfy this definition will yield comparable samples that should be free from concerns of disproportionate bias.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Isotaphonomy in concept and practice: an exploration of vertebrate microfossil bonebeds in the Upper Cretaceous (Campanian) Judith River Formation, north-central Montana

Rogers¹,

Carrano²,

Rogers³

et al. 2017

Paleobiology

View full text Add to dashboard Cite

Vertebrate microfossil bonebeds (VMBs)—localized concentrations of small resilient vertebrate hard parts—are commonly studied to recover otherwise rarely found small-bodied taxa, and to document relative taxonomic abundance and species richness in ancient vertebrate communities. Analyses of taphonomic comparability among VMBs have often found significant differences in size and shape distributions, and thus considered them to be non-isotaphonomic. Such outcomes of “strict” statistical tests of isotaphonomy suggest discouraging limits on the potential for broad, comparative paleoecological reconstruction using VMBs. Yet it is not surprising that sensitive statistical tests highlight variations among VMB sites, especially given the general lack of clarity with regard to the definition of “strict” isotaphonomic comparability. We rigorously sampled and compared six VMB localities representing two distinct paleoenvironments (channel and pond/lake) of the Upper Cretaceous Judith River Formation to evaluate biases related to sampling strategies and depositional context. Few defining distinctions in bioclast size and shape are evident in surface collections, and most site-to-site comparisons of sieved collections are indistinguishable (p≤0.003). These results provide a strong case for taphonomic equivalence among the majority of Judith River VMBs, and bode well for future studies of paleoecology, particularly in relation to investigations of faunal membership and community structure in Late Cretaceous wetland ecosystems. The taphonomic comparability of pond/lake and channel-hosted VMBs in the Judith River Formation is also consistent with a formative model that contends that channel-hosted VMBs were reworked from pre-existing pond/lake assemblages, and thus share taphonomic history.

show abstract

Section: Discussionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Isotaphonomy in concept and practice: an exploration of vertebrate microfossil bonebeds in the Upper Cretaceous (Campanian) Judith River Formation, north-central Montana

Rogers¹,

Carrano²,

Rogers³

et al. 2017

Paleobiology

View full text Add to dashboard Cite

show abstract

“…In Patagonia, they were originated during the last transgressive-regressive marine cycles (Marine Isotope Stages, MIS) (Haq et al, 1987;Zachos et al, 2001;Lisiecki and Raymo, 2005): MIS11, 9, 7, 5 (Mid-Late Pleistocene) and MIS1 (Holocene) (Schellmann and Radtke, 2010), of which the most continuous and richest fossiliferous deposits are MIS1, 5 and 7. Previous studies in Patagonia provided complete source of information for morphostratigraphy, sedimentology, geochronological, taphonomical and palaeoecological aspects of these deposits (e.g., Feruglio, 1950;Cionchi, 1988;Codignotto et al, 1988Codignotto et al, , 1992Schellmann, 2007;Schellmann and Radtke, 2010;Aguirre et al, 2005Aguirre et al, , 2006Aguirre et al, , 2007Aguirre et al, , 2008Aguirre et al, , 2009Aguirre et al, , 2011aAguirre et al, , 2011bAguirre et al, , 2013Aguirre et al, , 2015Ribolini et al, 2011;Richiano et al, 2012Richiano et al, , 2015. Feruglio (1950) defined for Patagonia the classical framework of six systems of "Marine Terraces", which integrate beach ridges, marine terraces and estuarine deposits.…”

Section: Geographical and Geological Settingmentioning

confidence: 99%

Do coastal fronts influence bioerosion patterns along Patagonia? Late Quaternary ichnological tools from Golfo San Jorge

Richiano

Aguirre

Castellanos

et al. 2017

Journal of Marine Systems

Self Cite

View full text Add to dashboard Cite

Late Quaternary marine molluscan skeletal concentrations from Argentina constitute a remarkable record of variations in palaeoceanographical conditions during interglacial times (mainly ca. 125 ka to present). Particularly, the Golfo San Jorge coastal area represents an extraordinary geographical zone to target from different points of view, mainly due to its linkage between northern and southern Patagonia, characterized by particular and contrasting physico-chemical conditions with direct consequences for littoral marine communities, determining their composition and structure. Among varied biological activities controlled by different environmental factors (i.e., substrate nature, sedimentation rates, water depth, sea surface temperature, salinity, nutrients-productivity), bioerosion traces can provide palaeoenvironmental evidence with important implications for palaeoclimate interpretations. In addition, the application of bioerosion patterns regionally and through time is a recent valuable worthy palaeoenvironmental tool not as yet developed for Patagonia. We attempted to characterize, qualitatively/semiquantitatively, the ichnotaxonomic composition of the coastal area of northern Golfo San Jorge since the Late Pleistocene; to compare results with those obtained for other geographical areas along Patagonia and the Bonaerensian coastal sectors; lastly, to evaluate its palaeoenvironmental/palaeoclimatic significance in a clue area in terms of circulation patterns near the Southern Ocean climatic pump. At Bustamante (Northern Patagonia Frontal System) Domichnia traces were dominant during the Late Pleistocene while Praedichnia in the mid-Holocene. Bustamante exhibits the highest ichnodiversity for the whole Argentinean coastal area. Ichnodiversity is not strongly different between Late Pleistocene and mid-Holocene interglacials and compared to present; however, the relative abundance of some ichnotaxa (e.g., Oichnus, Iramena, Pennatichnus, at Camarones; Oichnus, Iramena, Pinaceocladichnus, at Bustamante) differs across time. These variations, particularly the highest abundance in the Late Pleistocene (mainly Last Interglacial) of traces made by bryozoans-associated at present with modern enhanced productivity levels and coastal fronts in the Argentine continental shelf-point to higher productivity and more intensified northern Patagonia Front, as a result of a different palaeocirculation pattern, reinforcing previous independent sources of evidence based on molluscan palaeobiogeographical analyses.

show abstract

“…Analysis of specific taphonomic variables can be highly useful in delineating both the taphonomic path of an individual fossil (Meldahl and Flessa, 1990) and the characteristics of the environment in which it was deposited (Brett and Baird, 1986), in many cases providing information that is not available from sedimentological, faunal, or ecological datasets alone (e.g., Meldahl and Flessa, 1990;Zuschin et al, 1999;Tomašových, 2004a;Mancuso and Marsicano, 2008;Aguirre et al, 2011). Studies of the fossil record have focused on attributes such as fragmentation, corrasion, disarticulation, reorientation, and the presence and type of borings or encrusting organisms, while actualistic studies have incorporated additional taphonomic variables that are typically more accessible in the subfossil record, such as shell color and sheen (Powell et al, 2002;Lazo, 2004;Best, 2008;Mapes et al, 2010;Rodrigues and Simõ es, 2010).…”

Section: Introductionmentioning

confidence: 99%

Brachiopod Shell Discoloration as an Indicator of Taphonomic Alteration in the Deep-Time Fossil Record

Kolbe¹,

Zambito²,

Brett³

et al. 2011

PALAIOS

View full text Add to dashboard Cite

Taphonomic comparison between two bivalves (Mactra and Brachidontes) from Late Quaternary deposits in northern Argentina: Which intrinsic and extrinsic factors prevail under different palaeoenvironmental conditions?

Cited by 20 publications

References 65 publications

Isotaphonomy in concept and practice: an exploration of vertebrate microfossil bonebeds in the Upper Cretaceous (Campanian) Judith River Formation, north-central Montana

Isotaphonomy in concept and practice: an exploration of vertebrate microfossil bonebeds in the Upper Cretaceous (Campanian) Judith River Formation, north-central Montana

Do coastal fronts influence bioerosion patterns along Patagonia? Late Quaternary ichnological tools from Golfo San Jorge

Brachiopod Shell Discoloration as an Indicator of Taphonomic Alteration in the Deep-Time Fossil Record

Contact Info

Product

Resources

About