What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)

Fernández, Fernando J.; Montalvo, Claudia I.; Marín-Monfort, M. Dolores; Sostillo, Renata; Coll, Daiana G.; Lindsey, Emily; Rice, Karin A.; Takeuchi, Gary T.; Tomassini, Rodrigo L.

What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)

Rancho La Brea (RLB) in Los Angeles, USA, is an iconic fossil locality, owing to the high number and diversity of Quaternary vertebrate remains and their excellent preservation. More than a century of study, focused predominantly on large mammals, has provided valuable information along different li...

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Detalhes bibliográficos
Autores:	Fernández, Fernando J., Montalvo, Claudia I., Marín-Monfort, M. Dolores, Sostillo, Renata, Coll, Daiana G., Lindsey, Emily, Rice, Karin A., Takeuchi, Gary T., Tomassini, Rodrigo L.
Tipo de documento:	artigo
Estado:	Versión aceptada para publicación
Data de publicação:	2025
País:	España
Recursos:	Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:	DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:	oai:dnet:digitalcsic_::f337b746287af653fd5e700c7b91595f
Acesso em linha:	http://hdl.handle.net/10261/432247
Access Level:	Acesso embargado

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spelling	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)Fernández, Fernando J.Montalvo, Claudia I.Marín-Monfort, M. DoloresSostillo, RenataColl, Daiana G.Lindsey, EmilyRice, Karin A.Takeuchi, Gary T.Tomassini, Rodrigo L.Rancho La Brea (RLB) in Los Angeles, USA, is an iconic fossil locality, owing to the high number and diversity of Quaternary vertebrate remains and their excellent preservation. More than a century of study, focused predominantly on large mammals, has provided valuable information along different lines of research, including taxonomy, taphonomy, isotopic ecology, functional morphology, and paleopathology. In order to develop a better understanding of the formation of this site, we conducted a taphonomic study of the microvertebrates, using samples from asphalt seeps dating to before the Last Glacial Maximum. The taphonomic evidence suggests that direct entrapment is the most plausible process to explain the primary accumulation of the thousands of microvertebrate remains. Based on the absence of digestive corrosion and feeding marks, low percentages of juvenile individuals, relative abundance patterns, and anatomical indices (postcranial elements vs. cranial elements and distal vs. proximal limb elements), the activity of predators/scavengers is ruled out as a primary process in producing the assemblages, although other processes, such as water transport of skeletal elements from nearby areas, could also have played a role in the formation of the deposits. The occurrence of successive entrapments and episodes of fluvial transportation, combined with post-depositional internal movement within the seeps, would have given rise to the development of time-averaged assemblages produced through a complex interplay of factors.Wiley-Blackwell2026202620252026info:eu-repo/semantics/articlePostprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/432247reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)http://dx.doi.org/10.1002/jqs.70018Síinfo:eu-repo/semantics/embargoedAccessoai:dnet:digitalcsic_::f337b746287af653fd5e700c7b91595f2026-05-22T06:33:51Z
dc.title.none.fl_str_mv	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
title	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
spellingShingle	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA) Fernández, Fernando J.
title_short	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
title_full	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
title_fullStr	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
title_full_unstemmed	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
title_sort	What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)
dc.creator.none.fl_str_mv	Fernández, Fernando J. Montalvo, Claudia I. Marín-Monfort, M. Dolores Sostillo, Renata Coll, Daiana G. Lindsey, Emily Rice, Karin A. Takeuchi, Gary T. Tomassini, Rodrigo L.
author	Fernández, Fernando J.
author_facet	Fernández, Fernando J. Montalvo, Claudia I. Marín-Monfort, M. Dolores Sostillo, Renata Coll, Daiana G. Lindsey, Emily Rice, Karin A. Takeuchi, Gary T. Tomassini, Rodrigo L.
author_role	author
author2	Montalvo, Claudia I. Marín-Monfort, M. Dolores Sostillo, Renata Coll, Daiana G. Lindsey, Emily Rice, Karin A. Takeuchi, Gary T. Tomassini, Rodrigo L.
author2_role	author author author author author author author author
description	Rancho La Brea (RLB) in Los Angeles, USA, is an iconic fossil locality, owing to the high number and diversity of Quaternary vertebrate remains and their excellent preservation. More than a century of study, focused predominantly on large mammals, has provided valuable information along different lines of research, including taxonomy, taphonomy, isotopic ecology, functional morphology, and paleopathology. In order to develop a better understanding of the formation of this site, we conducted a taphonomic study of the microvertebrates, using samples from asphalt seeps dating to before the Last Glacial Maximum. The taphonomic evidence suggests that direct entrapment is the most plausible process to explain the primary accumulation of the thousands of microvertebrate remains. Based on the absence of digestive corrosion and feeding marks, low percentages of juvenile individuals, relative abundance patterns, and anatomical indices (postcranial elements vs. cranial elements and distal vs. proximal limb elements), the activity of predators/scavengers is ruled out as a primary process in producing the assemblages, although other processes, such as water transport of skeletal elements from nearby areas, could also have played a role in the formation of the deposits. The occurrence of successive entrapments and episodes of fluvial transportation, combined with post-depositional internal movement within the seeps, would have given rise to the development of time-averaged assemblages produced through a complex interplay of factors.
publishDate	2025
dc.date.none.fl_str_mv	2025 2026 2026 2026
dc.type.none.fl_str_mv	info:eu-repo/semantics/article Postprint info:eu-repo/semantics/acceptedVersion
format	article
status_str	acceptedVersion
dc.identifier.none.fl_str_mv	http://hdl.handle.net/10261/432247
url	http://hdl.handle.net/10261/432247
dc.relation.none.fl_str_mv	http://dx.doi.org/10.1002/jqs.70018 Sí
dc.rights.none.fl_str_mv	info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv	embargoedAccess
dc.publisher.none.fl_str_mv	Wiley-Blackwell
publisher.none.fl_str_mv	Wiley-Blackwell
dc.source.none.fl_str_mv	reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str	Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str	DIGITAL.CSIC. Repositorio Institucional del CSIC
collection	DIGITAL.CSIC. Repositorio Institucional del CSIC
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What happened with the smaller ones? First comprehensive taphonomic analysis of microvertebrates from the Late Pleistocene of Rancho La Brea (Los Angeles, USA)

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