Laura CodorniúUniversidad Nacional de San Luis · Department of Geology
Laura Codorniú
Doctor in Biological Sciences
Actually working in pterosaurs
About
90
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Introduction
Laura Codorniú currently works in San Luis National University and National Scientific Technical Research Council (Conicet) in Geology Department. Laura does research in Paleontology. Their current project is in Pterosaurs and others vertebrates of Argentina (San Luis and Patagonia). Neuroanatomy, ontogeny, paleo histology, embryo.
Skills and Expertise
Additional affiliations
January 2009 - present
August 1998 - present
Publications
Publications (90)
We describe a new locality with ctenochasmatid pterosaurs found in a tidal estuarine paleoenvironment of the Quebrada Monardes Formation (Lower Cretaceous). The new locality, which is named "Cerro Tormento", is in Cerros Bravos in the northeast Atacama region, Northern Chile. Here, we describe four cervical vertebrae, one of them belonging to a sma...
This contribution summarizes the history of paleontology in the Mesozoic sediments of the San Luis Province, as well as historical reviews of how the first activities related to the creation of a museum arise. The first findings in this province were made in the 1940s approximately, with the discovery of dinosaur footprints and later in 1963 the di...
The Caribbean islands are one of the most important hotspots of endemism and biodiversity globally, and the scenario of unique examples of biological radiations. Although our knowledge of the current and recently extinct diversity in the area is strong, the origin and evolution of most groups in the region remain obscure because of the absence of f...
New pterosaur remains from Cerro La Isla, Quebrada Monardes Formation (Lower Cretaceous), Northern Chile, are reported and described. The material comprises mandibular remains preserving dental bases and two vertebrae of the mid cervical series. The morphology and arrangement of the preserved dental bases of the pterosaurs of Cerro La Isla show a s...
In this contribution, we present the first pterosaur post-cranial bone from the Lohan Cura Formation (Albian) of the Cerro de los Leones locality (Picún Leufú, Neuquén Province). The material is an incomplete left ulna, preserved in three dimensions, and composed of the proximal epiphysis and part of the diaphysis. The element shares several affini...
A new locality with fossils of pterosaurs from Cerros Bravos, northeast of Copiapó, Atacama Region is reported, in outcrops of Quebrada Monardes Formation, a geological unit assigned to the Lower Cretaceous. Among the discovered remains are two incomplete first wing phalanges (one of them tridimensionally preserved), which have been assigned to pte...
A new locality with fossils of pterosaurs from Cerros Bravos, northeast of Copiapó, Atacama Region is reported, in outcrops of Quebrada Monardes Formation, a geological unit assigned to the Lower Cretaceous. Among the discovered remains are two incomplete first wing phalanges (one of them tridimensionally preserved), which have been assigned to pte...
Se da a conocer un nuevo sitio con fósiles de pterosaurios en la localidadde Cerros Bravos, al noreste de Copiapó, Región de Atacama, en afloramientos pertenecientes ala Formación Quebrada Monardes, unidad geológica asignada al Cretácico Inferior. Entre los restosdescubiertos se encuentran dos falanges alares del dedo I incompletas (una de ellas pr...
Although the Cretaceous is characterized by a rich fish diversity, Cretaceous continental fishes from Gondwana are poorly known and comparatively scarce. Among these fishes, the family Pleuropholidae is only known by a few species relatively poorly preserved, from the Middle Jurassic to Lower Cretaceous of Europe, Africa, North America, and South A...
Abstract: We report on a diminutive pterosaur specimen (MIC-V246), from the Lower Cretaceous
Lagarcito Formation, which has anatomical features and general proportions that agree
with those of other juvenile specimens of the filter-feeding pterosaur Pterodaustro guinazui.
MIC-V246 is nearly complete, with the majority of its bones in natural articu...
Pterosaurs are an extinct group of highly modified flying reptiles that thrived during the Mesozoic. This group has unique and remarkable skeletal adaptations to powered flight, including pneumatic bones and an elongate digit IV supporting a wing-membrane. Two major body plans have traditionally been recognized: the primitive, primarily long-tailed...
Supplementary Material
The records of Argentine pterosaurs have lately increased notably, both in number of localities and temporal range. New findings come from Late Triassic, Middle and Late Jurassic, and Cretaceous levels. The Late Triassic record is the oldest from Gondwana so far, whereas those of the Jurassic complement the scarce record from this period worldwide....
The braincase anatomy of pterosaurs is poorly known because this region of the skull is rarely preserved,
particularly in basal pterodactyloid pterosaurs (Archaeopterodactyloidea). We present new information on the braincase morphology of the Early Cretaceous Argentinean ctenochasmatid Pterodaustro guinazui. Morphological information collected from...
Here we present archosauriform remains from ‘Abra de los Colorados’, a fossiliferous locality at Sierra de Guayaguas, NW San Luis Province. Two fossiliferous levels were identified in outcrops of the Quebrada del Barro Formation (Norian), which represent the southernmost outcrops of the Marayes–El Carrizal Basin. These levels are composed by massiv...
In this contribution, we present tetrapod remains from the Quebrada del Barro Formation, south of Sierra de Guayaguas, NW of San Luis Province. The locality was previously reported but a detailed study of the material is conducted here. The specimens were found isolated, and consist in one partial incomplete maxilla (MIC-V718), one caudal vertebra...
The lithographic limestones of the Los Catutos Member (Vaca Muerta Formation, Neuquén Province, Argentina) (late middle–early late Tithonian) bear a great diversity of marine reptiles. These deposits are unique in the Southern Hemisphere as the record of lithographic limestones from the Upper Jurassic is restricted to the Northern Hemisphere, parti...
Significant paleobiological data has emerged from the San Luis Basin (Early Cretaceous, Aptian-Albian in Central Argentina) during the last decades. Two units in this basin include lake paleo-environments with important fossil contents in an excellent state of preservation that could be considered as Konservat Lagerstätten deposits. The association...
The increasing number of fossil pterosaur eggs sheds light on nesting environments and breeding behaviors of these extinct flying reptiles. Here we report the first partial three-dimensional egg of the pterosaur, Pterodaustro guinazui, from central Argentina. The specimen was discovered from the same Albian deposits as the exceptional P. guinazui e...
The San Luis Basin (Early Cretaceous, Aptian-Albian, central-western Argentina) contains two formations, La Cantera and Lagarcito, with lacustrine facies with well-preserved fossils that could be considered as Konservat-Lagerstäten. The fossil record of the La Cantera Formation includes a variety of palynomorphs (pollen grains and spores) and plant...
Records of flying Jurassic reptiles are very scarce in the Southern Hemisphere. Upper Jurassic pterosaurs have been discovered in marine Tithonian sedimentites of the Vaca Muerta Formation, in the Neuquén Basin, Patagonia, Argentina. Only four specimens are known so far: the first from Arroyo Picún Leufú, and the other three from the lithographic l...
Braincase anatomy of Pterodaustro guinazui.
First details about the braincase anatomy of Pterodaustro guinazui
In 2000, researchers and technicians of the Paleontological Museum Egidio Feruglio (MEF) found levels of pterosaurs in the lake middle Jurassic deposits of the Cañadón Asfalto Formation (Aalenian-Bajocian), in Cerro Cóndor area, Chubut province. Several postcranial materials belonging to different individuals were found, as well as two mandibles of...
Two nearly complete skeletons of the filter-feeding pterodactyloid Pterodaustro guinazui from the Lower Cretaceous of Argentina exhibit clusters of poorly sorted coarse sand to fine gravel inside the abdominal cavity. These stones are interpreted as ingested gastroliths (geogastroliths), which are commonly found in a variety of archosaurs (includin...
Records of flying Jurassic reptiles are very scarce in the Southern Hemisphere. Upper Jurassic pterosaurs have been discovered in marine Tithonian sediments of the Vaca Muerta Formation, in the Neuquén Basin, Patagonia, Argentina. Only four specimens are known so far: the first from Arroyo Picún Leufú, and the other three from the lithographic lime...
La Formación lacustre La Cantera aflora en el faldeo sur de la Sierra de El Gigante al noroeste de la ciudad de San Luis. Nuevas metodologías aplicadas en las exploraciones de los dos últimos años en la localidad tipo (Cantera de Gutiérrez), permitieron realizar estudios bioestratonómicos y tafonómicos. El trabajo consistió en la extracción, en dif...
The braincase of the specimen MPEF PV 3613, a pterosaur from the Middle Jurassic of
the Cañadón Asfalto Formation, Chubut Province (Codorniú et al., 2010) is wellpreserved
and almost undistorted. No sutures are discernible between the braincase
elements. The use of CT scans revealed aspects of the pneumaticity of the braincase that
is affecting the...
La Cantera es una de las unidades litoestratigráfcas que componen el Grupo del Gigante, cuya asociación fósil fue asignada al Aptiano (110 Ma). Todo el material extraído hasta la actualidad proviene del miembro basal de esta formación lacustre que está compuesto de areniscas fnas y de limolitas. Los peces más abundantes del yacimiento fueron asigna...
The Cañadon Asfalto Formation is mainly composed of lacustrine deposits and has provided the most diverse vertebrate fauna known for the Middle Jurassic in the Southern Hemisphere. Pterosaur remains have been discovered from several localities in this unit and briefly reported by Rauhut et al. (2001) and Unwin et al. (2004). Here we present further...
La Cantera es una de las unidades litoestratigráficas que componen el Grupo del Gigante, cuya asociación fósil fue asignada al Aptiano (110 Ma). Todo el material extraído hasta la actualidad proviene del miembro basal compuesto de areniscas finas y de limolitas. Los peces extraídos de esta formación lacustre pertenecen a diferentes grupos como tele...
The Cañadon Asfalto Formation is mainly com-posed of lacustrine deposits and has provided the most diverse vertebrate fauna known for the Middle Jurassic in the Southern Hemisphere. Pterosaur remains have been discovered from several localities in this unit and briefly reported by Rauhut et al. (2001) and Unwin et al. (2004). Here we present furthe...
The fossiliferous content from La Cantera Formation, San Luis Province in central western Argentina, is known from 20 years ago although was not systematically explored until the last five years. Its geographic position is strategic because it is the only lacustrine fossiliferous unit located outside Patagonia, in southern South America, recording...
This study provides a comprehensive investigation of the bone microstructure of multiple bones of the Early Cretaceous filter-feeder, Pterodaustro guinazui, from the Largacito Formation of Central Argentina. We provide information regarding the bone histology of multiple elements from single skeletons, as well as a variety of bones from different i...
Craneal and post-craneal characters of the Pterodactyloid Pterodaustro guinazui
Pterodaustro guiñazui from the Lower Cretaceous laminated shales of the Lagarcito Formation of Central Argentina (Sierra de Las Quijadas, San Luis Province) is a medium-sized, filter-feeding pterodactyloid. Since the first excavations in the 1960s, hundreds of individuals (with wingspans ranging from 0.28 to ~ 3m) have been recovered from this loca...
Life-history parameters of pterosaurs such as growth and ontogenetic development represent an enigma. This aspect of pterosaur biology has remained perplexing because few pterosaur taxa are represented by complete ontogenetic series. Of these, Pterodaustro is unique in that besides being represented by hundreds of individuals with wing spans rangin...
A revision of the semionotids from the Lower Cretaceous Lagarcito Formation of Argentina leads to the
conclusion that only one taxon, Neosemionotus puntanus Bocchino, 1973, is represented, instead of two monospecific
genera and one species of Lepidotes as originally thought. Neosemionotus shares with Lepidotes the presence of more than
one suborbit...
To date, no specific prospecting for pterosaurs has been done in Argentina, except in San Luis Province, an area outside Patagonia. Most Patagonian pterosaur records are fragmentary and all of them were accidentally discovered. However, they come from six localities, the number of pterosaurs-bearing localities in South America. This synthesis inclu...
Allometric change in middle cervical vertebrae in Pterodaustro guinazui
La abundancia de especimenes de Pterodaustro guinazui Bonaparte, provenientes de la Formación Lagarcito (Aptiano-Albiano), en la Provincia de San Luis, ha permitido establecer algunos cambios alométricos en las vértebras cervicales post-axiales, vinculados el desarrollo ontogenético. La muestra de estudio consiste de tres esqueletos casi completos...
En los últimos 200 años se han encontrado numerosos ejemplares de pterosaurios, pero hasta ahora nunca en estado embrionario, es decir dentro del huevo. Se dieron a conocer casi paralelamente los dos primeros embriones en el mundo, fue en mayo del 2004 que investigadores argentinos dan a conocer en las Jornadas de Paleontología de Vertebrados de La...
A small to medium-sized pterodactyloid pterosaur (wingspan approximately 1.10 m) from the Upper Jurassic (middle-late Tithonian) marine deposits of the Vaca Muerta Formation of Patagonia (Los Catutos area, central Neuque´n Province, Argentina) is reported. The specimen lacks the skull but constitutes a nearly complete postcranial skeleton, which in...
La Cantera Formation (Del Gigante Group, San Luis Basin) crops out in a restricted area on the eastern side of the southern tipo of Sierra del Gigante, in the northwest of San Luis Province. It is composed by green-grey siltstone and claystone, laminated with red-brown sandstone and grey claystone interbedded at the top, having a measured thickness...
Restudying the semionotids from the Lower Cretaceous Lagarcito Formation of Argentina, led us to the conclusion that only one genus with two species, Neosemionotus puntanus BOCCHINO, 1973 and N. cuyanus BOCCHINO, 1974, is represented, instead of two monospecific genera as originally thought. Neosemionotus shares with Lepidotes the presence of more...
Four unpublished specimens preliminarily assigned to Pterodaustro including the well-preserved caudal vertebrae are described. The description is mainly based on two of them that correspond to sub-adult individuals of different sizes, MHIN-UNSL-GEO-V 243 and MHIN-UNSL-GEO-V 165. The other two specimens, MHIN-UNSL-GEO-V 241 and MMP 1168 (28 cm and 3...
Four unpublished specimens preliminarily assigned to Pterodaustro including the well-preserved caudal vertebrae are described. The description is mainly based on two of them that correspond to sub-adult individuals of different sizes, MIC-V 243 and MHIN-UNSL-GEO-V 165. The other two specimens, MIC-V 241 and MMP 1168 (28 cm and 30 cm wingspan, respe...
Our knowledge of the eggs and embryos of pterosaurs, the Mesozoic flying reptiles, is sparse. Until now, the recent discovery of an ornithocheirid embryo from 121-million-year-old rocks in China constituted the only reliable evidence of an unhatched pterosaur. Here we describe an embryonic fossil of a different pterosaur from the Early Cretaceous l...
A sedimentological study of the Albian (Early Cretaceous) Lagarcito Formation and the description of new fish fossils from several stratigraphic levels are presented. The recognized facies and the facies association are interpreted as deposited in a shallow perennial lake, and they are subordinately combined with facies representing an ephemeral la...
Se presenta un pequeñísimo ejemplar de pterosaurio proveniente de la Formación Lagarcito (Albiano), cuyas proporciones y anatomía general concuerdan con aquellas correspondientes a otros ejemplares juveniles del pterosaurio filtrador Pterodaustro guinazui, conocido por cientos de fósiles colectados de los mismos niveles estratigráficos. El nuevo ej...
Se presenta un pequeñísimo ejemplar de pterosaurio proveniente de la Formación Lagarcito (Albiano), cuyas proporciones y anatomía general concuerdan con aquellas correspondientes a otros ejemplares juveniles del pterosaurio filtrador Pterodaustro guinazui, conocido por cientos de fósiles colectados de los mismos niveles estratigráficos. El nuevo ej...
We report on two juvenile specimens of Pterodaustro guinazui, a medium-sized, filter-feeding pterodactyloid pterosaur from the Lower Cretaceous (Albian) lacustrine deposits of the Lagarcito Formation of central Argentina (Sierra de Las Quijadas, San Luis Province). Both specimens lack the skull, but one is otherwise nearly complete and articulated,...
Two new neonate specimens from the Lagarcito Formation (Albian) of central Argentina
(San Luis Province) provide evidence of the allometric changes involved in the postnatal development of Pterodaustro guinazui and contribute to our knowledge of the anatomy of this pterodactyloid. The small size (approximately 30 cm of wingspan), the lack of fusion...
Chondrostei was redefined as a monophyletic group in 1982, including the Acipenseriformes and fossil taxa more closely related to them to other actinopterygians. Previously the term was used for a paraphyletic assemblage of basal actinopterygians in general. Recent studies of acipenseriforms confirmed the monophyly of Chondrostei, which so far only...
We report on two hatchling pterosaurs from the Lower Cretaceous lacustrine deposits of the Lagarcito Formation (Albian) of central Argentina (San Luis Province). One of the specimens lacks the skull but is otherwise nearly complete and articulated; the other is more fragmentary. Both specimens were found at the same quarry that has provided hundred...
La Formación La Cantera (Aptiano) del Grupo del Gigante, ha dado una de las ictiofaunas más importantes del Cretácico temprano de América del Sur. Los fósiles provienen de distintos sitios y niveles, todos de los afloramientos de lutitas fisiles que representan un ambiente lacustre somero y bordean por el este a la Sierra del Gigante, 80 Km al nore...
La Formación La Cantera aflora en el extremo sur de la Sierra del Gigante, al noroeste de la provincia de San Luis. Ha sido datada en base a la presencia de palinomorfos en una edad aptiana-albiana. El contenido fosilífero de esta unidad, cuyo paleoambiente representa un lago somero, incluye restos de plantas, invertebrados (en su mayoría insectos...
Parte de la ictiofauna fósil mesozoica de la Provincia de San Luis está representada por peces óseos que se registran en depósitos lacustres de la Formación Lagarcito en la Sierra de Las Quijadas. Hace algunos años Andreína Bocchino estudió los materiales recolectados en la década del 70 y definió dos nuevos géneros: Neosemionotus y Australepidotes...
Nuevo material obtenido en recientes campañas permitió completar la anatomía osteológica de los peces de la Formación Lagarcito (Aptiano-Albiano), San Luis, Argentina. Hasta no hace mucho, dentro del Orden Semionotiformes se incluían más de 20 géneros, sin embargo, en clasificaciones recientes se ha excluido a las formas hipsisomáticas, es decir de...