Chert tools from layers Jb-L.

1. Unilaterally retouched, naturally backed blade (P13-401, top of layer K). 2. Dufour bladelet, mesial fragment (P11sc980, top of layer L).

Bibliographic Details
Main Authors:	João Zilhão (215800), Diego E. Angelucci (11614267), Lee J. Arnold (11614270), Francesco d’Errico (432642), Laure Dayet (793579), Martina Demuro (648258), Marianne Deschamps (4860325), Helen Fewlass (10644860), Luís Gomes (11614273), Beth Linscott (11614276), Henrique Matias (11614279), Alistair W. G. Pike (9647800), Peter Steier (254409), Sahra Talamo (116803), Eva M. Wild (11614282)
Format:	Still Image
Language:	unknown
Published:	2021
Subjects:	Sociology Science Policy Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified two major discontinuities two key points similar persistence pattern persist beyond 39 palaeoenvironmental inferences derived magnetic susceptibility analyses last glacial maximum key evidence comes index fossils appear holocene layers abc faunal remains relate empirical difficulties go component mixing caused caldeir &# 227 associated cultural transitions sedimentation rates varied refine using radiocarbon forming sedimentation hiatuses whose traditional subdivision underwent significant disturbance expected stratigraphic order div >< p expected radiocarbon ages underlying pleistocene succession site formation issues sample association issues overlie layer eb greenland interstadial 2 global climate revealed dating anomalies exist 220 – 23 000 years ago upper palaeolithic archaeology portugal )</ p middle palaeolithic levels upper solutrean place radiocarbon ages layer eb upper pleistocene upper palaeolithic sedimentation rate whose chronology succession ’ stratigraphic integrity portugal reveal middle palaeolithic depositional disturbance dating shows anomalies consist early upper used close updated overview stone tools steep increase stands even solutrean technocomplex shelter sites method ’ karst archives incomplete decontamination human usage human settlement funerary use fully understand early neolithic critical intervals controversies surrounding carnivore activity cantabrian region caldeirão features caldeirão brings c </ bayesian modelling archaeological content applicability ) Greenland
Online Access:	https://doi.org/10.1371/journal.pone.0259089.g010

Description
Summary:	1. Unilaterally retouched, naturally backed blade (P13-401, top of layer K). 2. Dufour bladelet, mesial fragment (P11sc980, top of layer L).