Papers by MIRIAM PEREZ DE LOS RIOS
Journal of Human Evolution, Sep 1, 2012
The internal (nasal and paranasal) cranial anatomy of the Middle Miocene (11.9 Ma [millions of ye... more The internal (nasal and paranasal) cranial anatomy of the Middle Miocene (11.9 Ma [millions of years ago]) great ape Pierolapithecus catalaunicus (Hominidae: Dryopithecini) is described on the basis of computed-tomography scans of the holotype specimen (IPS21350), with particular emphasis on its phylogenetic implications. Pierolapithecus displays the following characters: an anteriorly-restricted maxillary sinus that posteriorly spreads towards the ethmoidal area (thus resembling the pongine condition), although being situated well above the molar roots (as in kenyapithecins, other dryopithecins and pongines); lack of frontal sinus (a synapomorphy of derived pongines, independently acquired by both cercopithecoids and hylobatids); posteriorly-situated turbinals (as in Pongo); anteriorly-projecting nasolacrimal canal (as in Pongo); and probably stepped nasal floor with non-overlapping premaxillary-maxillary contact (as in dryopithecines and stem hominoids, although it cannot be conclusively shown due to bone damage). Overall, Pierolapithecus displays a mosaic of primitive hominid and derived pongine features that are inconsistent with this taxon being a hominine (as previously suggested). Two alternative phylogenetic interpretations are possible: Pierolapithecus may be a stem member of the Hominidae as previously suggested in its original description, or alternatively this taxon may be a stem member of the Ponginae s.l. (with the European dryopithecines being the sister taxon to the Asian pongines).
Kurʹer ÛNESKO, Dec 31, 2021
International Journal Of Legal Medicine, Jul 31, 2020
Textiles damage analysis is a very valuable tool in forensic investigations. However, to date, ve... more Textiles damage analysis is a very valuable tool in forensic investigations. However, to date, very little research has been carried out to understand the impact of bullet causing damages to clothing. According to the review of the most recent scientific papers, the frictional heating and crushing action of a bullet passing through synthetic fibres cause a unique transformation in their ends called mushroom-shaped morphology. In this study, the textile remains of six individuals executed during the first decade of the Chilean military dictatorship period (1973-1990) were analysed. The purpose was to examine their clothing in order to describe the fibre defects in the bullet holes. The fibres were directly observed using two different models of stereomicroscopy (MZ16A and EZ4D, Leica Microsystem Ltd., Wetzlar, Germany) and through a combination of transmitted, oblique and co-axial illumination (with Leica DFC500 Digital Camera), at × 230 and at a resolution of up to 840 Lp/mm. The mushroom-shaped morphology, along with rupturing of yarns, fibrillation or splitting of fibres, was observed in the bullet holes. Although the mushroomshaped is a useful pattern for bullet hole identification in synthetic fibres, further research needs to be performed for developing a sounder interpretational framework of this type of forensic evidence.
Risālaẗ al-Yūniskū, Nov 11, 2021
Le Courrier de l'Unesco, Nov 11, 2021
American Journal of Physical Anthropology, Jun 11, 2013
The two hominoid teeth-a central upper incisor (NMB G.a.9.) and an upper molar (FSL 213981)from t... more The two hominoid teeth-a central upper incisor (NMB G.a.9.) and an upper molar (FSL 213981)from the Middle Miocene site of La Grive-Saint-Alban (France) have been traditionally attributed to Dryopithecus fontani (Hominidae: Dryopithecinae). However, during the last decade discoveries in the Vallès-Penedès Basin (Spain) have shown that several hominoid genera were present in Western Europe during the late Middle Miocene. As a result, the attribution of the dryopithecine teeth from La Grive is not as straightforward as previously thought. In fact, similarities with the upper incisor of Pierolapithecus have led to suggestions that either the latter taxon is present at La Grive, or that it is a junior synonym of Dryopithecus. Here, we re-describe the La Grive teeth and critically revise their taxonomic assignment based on metrical and Additional Supporting Information may be found in the online version of this article.
The UNESCO courier, Nov 10, 2021
HAL (Le Centre pour la Communication Scientifique Directe), Sep 19, 2019
Alm ecija et al., 2012) are not counted here because they are currently dated to the earliest Val... more Alm ecija et al., 2012) are not counted here because they are currently dated to the earliest Vallesian (11.2 Ma; Alba et al., 2019a).
TDX (Tesis Doctorals en Xarxa), Jan 16, 2015
The internal (nasal and paranasal) cranial anatomy of the Middle Miocene (11.9 Ma [millions of ye... more The internal (nasal and paranasal) cranial anatomy of the Middle Miocene (11.9 Ma [millions of years ago]) great ape Pierolapithecus catalaunicus (Hominidae: Dryopithecini) is described on the basis of computed-tomography scans of the holotype specimen (IPS21350), with particular emphasis on its phylogenetic implications. Pierolapithecus displays the following characters: an anteriorly-restricted maxillary sinus that posteriorly spreads towards the ethmoidal area (thus resembling the pongine condition), although being situated well above the molar roots (as in kenyapithecins, other dryopithecins and pongines); lack of frontal sinus (a synapomorphy of derived pongines, independently acquired by both cercopithecoids and hylobatids); posteriorly-situated turbinals (as in Pongo); anteriorly-projecting nasolacrimal canal (as in Pongo); and probably stepped nasal floor with non-overlapping premaxillary emaxillary contact (as in dryopithecines and stem hominoids, although it cannot be conclusively shown due to bone damage). Overall, Pierolapithecus displays a mosaic of primitive hominid and derived pongine features that are inconsistent with this taxon being a hominine (as previously suggested). Two alternative phylogenetic interpretations are possible: Pierolapithecus may be a stem member of the Hominidae as previously suggested in its original description, or alternatively this taxon may be a stem member of the Ponginae s.l. (with the European dryopithecines being the sister taxon to the Asian pongines).
El Correo de la UNESCO, 2021
Journal of Human Evolution, 2020
This work has been funded by the Agencia Estatal de Investigación-European Regional Development F... more This work has been funded by the Agencia Estatal de Investigación-European Regional Development Fund of the European Union (CGL2016-76431-P and CGL2017-82654-P, AEI/FEDER-UE), the Generalitat de Catalunya (CERCA Program and consolidated research groups 2017 SGR 086 and 2017 SGR 116), and French CNRS. Fieldwork at ACM was defrayed by CESPA Gestión de Residuos S.A.U. Microtomographic scans of the fossil specimens were realized at the Multidisciplinary Laboratory of the "Abdus Salam" International Centre for Theoretical Physics (under the auspices of the SAPIENS Project funded by the Centro Fermi). We thank S. Llàcer for image processing, S. Calzada for the loan of specimens housed at the MGSB, C. Argot for access to specimens housed at the MNHN, N. Mémoire and M. Landreau for access to specimens housed at the MHNB, P. Bayle for the CT scans of the Harlé specimens, J. Braga and the MNHN for access to CT scans of HGP1, and Eileen Westwig for access to extant comparative material from the under her care at the AMNH. We further acknowledge the collaboration of the Centre de Restauració i Interpretació Paleontològica (CRIP; Ajuntament dels Hostalets de Pierola) and the Servei d'Arqueologia i Paleontologia of the Generalitat de Catalunya. We thank the Editor
Cidaris, 2010
Información del artículo Maxillary and frontal sinuses in Eurasian Miocene hominoids: phylogeneti... more Información del artículo Maxillary and frontal sinuses in Eurasian Miocene hominoids: phylogenetic implications.
Journal of Human Evolution, 2013
New dental remains of the fossil great ape Anoiapithecus brevirostris are described from the Midd... more New dental remains of the fossil great ape Anoiapithecus brevirostris are described from the Middle Miocene local stratigraphic series of Abocador de Can Mata (ACM) in els Hostalets de Pierola (Vallès-Penedès Basin, NE Iberian Peninsula). These specimens correspond to maxillary fragments with upper teeth from two female individuals from two different localities: left P(3)-M(1) (IPS41712) from ACM/C3-Aj (type locality; 11.9 Ma [millions of years ago]); and right M(1)-M(2) and left P(4)-M(2) (IPS35027) from ACM/C1-E* (12.3-12.2 Ma). Relative enamel thickness is also computed in the latter individual and re-evaluated in other Middle Miocene hominoids from ACM, in order to better assess their taxonomic affinities. With regard to maxillary sinus development, occlusal morphology, molar proportions and enamel thickness, the new specimens show greater resemblances with the (male) holotype specimen of A. brevirostris. They differ from Pierolapithecus catalaunicus in displaying less inflated crests, a more lingually-located hypocone, and relatively lower-crowned molars; from Dryopithecus fontani, in the relatively thicker enamel and lower-crowned molars; from Hispanopithecus spp., in the more inflated crown bases, less peripheral cusps and more restricted maxillary sinus; and from Hispanopithecus laietanus also in the thicker crests, more restricted occlusal foveae, and relatively lower-crowned molars. The new specimens of A. brevirostris show some slight differences compared with the holotype of this species: smaller size (presumably due to sexual size dimorphism), and less distally-tapering M(2) occlusal contour (which is highly variable in both extant and extinct hominoids). The reported remains provide valuable new evidence on dental intraspecific variation and sexual dimorphism in Anoiapithecus. From a taxonomic viewpoint, they support the distinction of this taxon from both Dryopithecus and Pierolapithecus. From a chronostratigraphic perspective, IPS35027 from ACM/C1-E* enlarges the known temporal distribution of Anoiapithecus, further representing the oldest record (first appearance datum) of hominoids in the Iberian Peninsula.
Journal of Human Evolution, 2012
The internal (nasal and paranasal) cranial anatomy of the Middle Miocene (11.9 Ma [millions of ye... more The internal (nasal and paranasal) cranial anatomy of the Middle Miocene (11.9 Ma [millions of years ago]) great ape Pierolapithecus catalaunicus (Hominidae: Dryopithecini) is described on the basis of computed-tomography scans of the holotype specimen (IPS21350), with particular emphasis on its phylogenetic implications. Pierolapithecus displays the following characters: an anteriorly-restricted maxillary sinus that posteriorly spreads towards the ethmoidal area (thus resembling the pongine condition), although being situated well above the molar roots (as in kenyapithecins, other dryopithecins and pongines); lack of frontal sinus (a synapomorphy of derived pongines, independently acquired by both cercopithecoids and hylobatids); posteriorly-situated turbinals (as in Pongo); anteriorly-projecting nasolacrimal canal (as in Pongo); and probably stepped nasal floor with non-overlapping premaxillary-maxillary contact (as in dryopithecines and stem hominoids, although it cannot be conclusively shown due to bone damage). Overall, Pierolapithecus displays a mosaic of primitive hominid and derived pongine features that are inconsistent with this taxon being a hominine (as previously suggested). Two alternative phylogenetic interpretations are possible: Pierolapithecus may be a stem member of the Hominidae as previously suggested in its original description, or alternatively this taxon may be a stem member of the Ponginae s.l. (with the European dryopithecines being the sister taxon to the Asian pongines).
PaleoLusitana, 2009
En los últimos años se viene produciendo una disminución significativa del número de estudiantes ... more En los últimos años se viene produciendo una disminución significativa del número de estudiantes universitarios en el área de las ciencias naturales, a la par que ha aumentado considerablemente el número de alumnos de esta área interesados en las excavaciones paleontológicas del yacimiento paleontológico de Somosaguas. En vista de este éxito, el Proyecto Paleontológico de Somosaguas ha desarrollado un proyecto de formación de jóvenes investigadores (Equipo de Introducción a la Investigación GeoPaleoBiológica en ...
American Journal of Physical Anthropology, 2013
ABSTRACTThe two hominoid teeth—a central upper incisor (NMB G.a.9.) and an upper molar (FSL 21398... more ABSTRACTThe two hominoid teeth—a central upper incisor (NMB G.a.9.) and an upper molar (FSL 213981)—from the Middle Miocene site of La Grive‐Saint‐Alban (France) have been traditionally attributed to Dryopithecus fontani (Hominidae: Dryopithecinae). However, during the last decade discoveries in the Vallès‐Penedès Basin (Spain) have shown that several hominoid genera were present in Western Europe during the late Middle Miocene. As a result, the attribution of the dryopithecine teeth from La Grive is not as straightforward as previously thought. In fact, similarities with the upper incisor of Pierolapithecus have led to suggestions that either the latter taxon is present at La Grive, or that it is a junior synonym of Dryopithecus. Here, we re‐describe the La Grive teeth and critically revise their taxonomic assignment based on metrical and morphological comparisons with other Middle to Late Miocene hominoids from Europe and Turkey, with particular emphasis on those from the Vallès‐P...
Science, 2015
Meet your gibbon cousin Apes are divided into two groups: larger-bodied apes, or hominoids, such ... more Meet your gibbon cousin Apes are divided into two groups: larger-bodied apes, or hominoids, such as humans, chimps, and gorillas; and smaller-bodied hylobatids, such as gibbons. These two lineages are thought to have diverged rather cleanly, sharing few similarities after the emergence of crown hominoids. Alba et al. describe a new ape from the Miocene era that contains characteristics from both hominoids and small-bodied apes (see the Perspective by Benefit and McCrossin). Thus, early small-bodied apes may have contributed more to the evolution of the hominoid lineage than previously assumed. Science , this issue p. 10.1126/science.aab2625 ; see also p. 515
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Papers by MIRIAM PEREZ DE LOS RIOS