Mario E. SuárezUniversity of Chile · Ontogenia y Filogenia
Mario E. Suárez
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Introduction
Publications
Publications (45)
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 reseach presents new material of ray-finned fishes recovered from Upper Cretaceous strata exposed in the city of Algarrobo, central Chile. The material includes specimens here referred to the genus Enchodus, which are the first local records of early Maastrichtian age. Three coeval, isolated teeth are here referred to the genus Pachyrhizodus,...
We describe isolated shark teeth collected from levels of the Calafate Formation at the SE coast of the Argentino Lake, Calafate city, Santa Cruz province, Argentina (Atlantic Ocean), and from the Algarrobo coast at the Valparaíso Region in central Chile (Pacific Ocean). The teeth belong to a new species of the echinorhiniform genus Echinorhinus. E...
The stratigraphy of the Bahía Inglesa Formation in the Caldera Basin west of Copiapó, (north-central Chile) is revised, based on hitherto unpublished stratigraphic sections and 87Sr/86Sr dating. The depositional environment varied from a rocky shoreline to the upper continental slope, with sea-level oscillations and tectonic movements causing numer...
Along the south-western coast of South America, three genera of fossil phocids (true seals) have been formally described from the late Neogene: Acrophoca and Piscophoca from Chile and Peru, and, more recently, Hadrokirus from Peru, which all represent medium- to large-sized phocids. Here, we report the discovery of Australophoca changorum gen. et s...
Se reportan nuevos hallazgos paleontológicos en el área del Monumento Natural Pichasca, IV Región. Se incrementa el conocimiento acerca de la procedencia estratigráfica de paleofaunas y paleofloras tempranamente reportadas por Casamiquela et al., (1969), Torres y Rallo (1981) y Torres et al., (1983) originariamente asignadas a la Formación La Viñit...
Se resumen los registros de ictiosaurios (Reptilia: Ichthyosauria) conocidos hasta la fecha en Chile. Los hallazgos en el norte del país incluyen abundantes registros desde el Triásico tardío hasta el Jurásico Medio, sin embargo, el material es hasta ahora fragmentario y poco diagnóstico, correspondiendo en todos los casos a Ichthyosauria indet. Po...
Se presenta la primera síntesis de los hallazgos de mosasaurios (Squamata: Mosasauroidea) del Cretácico Superior de Chile. Casi la totalidad de los materiales recolectados hasta ahora provienen de diferentes localidades de la costa de Chile central, junto con una única localidad en el extremo sur del país, cuyas edades varían entre el Maastrichtian...
The genus Mirounga is the largest living member of the Phocidae family (true seals) and includes two species: M. angustirostris and M. leonina. These species exhibit a noticeable antitropical distribution in the Northern and Southern hemispheres, respectively. The evolutionary history of elephant seals, especially in regard to establishing this ant...
We report here new evidence of tridactyl dinosaur footprints, comprising nine isolated footprints from a new locality in the Atacama Region, northern Chile. The track-bearing levels are located mainly at La Descubridora ravine and one isolated track near the intersection between La Descubridora and Carriza-lillo ravines, approximately 11 km southea...
Marine mammal mass strandings have occurred for millions of years, but their origins defy singular explanations. Beyond human causes, mass strandings have been attributed to herding behaviour, large-scale oceanographic fronts and harmful algal blooms (HABs). Because algal toxins cause organ failure in marine mammals, HABs are the most common mass s...
ABSTRACT—This paper describes a new species of elasmosaurid plesiosaur,Aristonectes quiriquinensis, sp. nov., based on a partial skeleton recovered from upper Maastrichtian beds of the Quiriquina Formation of central Chile. The material described here consists of two skeletons, one collected near the village of Cocholgue, and a second juvenile spec...
Modern pinnipeds distributed along the coasts of continental South America consist almost entirely of otariids (sea lions and fur seals). In contrast, phocids (true seals) are present only on the southernmost extreme of Chile. This recent biogeographic pattern is consistent with the zooarchaeological record (∼8—2 ka), but it is incompatible with th...
Paleogene records of birds in the Eastern margin of the Pacific Ocean have increased in recent years, being almost exclusively restricted to fossil Sphenisciformes (penguins). New avian remains (Ornithurae, Neornithes) from Middle-to-Late Eocene levels of the Estratos de Algarrobo unit, in Algarrobo, central Chile, are disclosed in the present work...
Paleogene records of birds in the Eastern margin of the Pacific Ocean have increased in recent years, being almost exclusively restricted to fossil Sphenisciformes (penguins). New avian remains (Ornithurae, Neornithes) from Middle-to-Late Eocene levels of the Estratos de Algarrobo unit, in Algarrobo, central Chile, are disclosed in the present work...
Partial remains of a titanosaur sauropod collected in the Tolar Formation (Upper Cretaceous) at the Atacama Desert (Antofagasta Region), northern Chile, is described, and a new species, Atacamatitan chilensis gen. et sp. nov., is erected. The material consists mainly of dorsal and caudal vertebrae, part of a humerus and a femur. The presence of a t...
El registro de aves fósiles en Chile se ha incrementado en forma notable en los últimos años. Las localidades abarcan desde el Cretácico Superior al Neógeno, con representantes de nueve familias. Los hallazgos más recientes corresponden al Eoceno tardío de la Región de Magallanes, donde se han reconocido múltiples restos fragmentarios de Spheniscif...
New remains of plesiosaurs (Diapsida; Sauropterygia) found in a transported block correlated with upper levels of the Dorotea Formation, Late Cretaceous (Maastrichtian) are described herein. They were collected on the southern slopes of Sierra Dorotea located northeast of Puerto Natales (51°41'20,4"S, 72°26'07,4"W), Magallanes Region, Chile. This i...
Se describen nuevos restos de plesiosaurios (Diapsida; Sauropterygia) incluidos en un bloque rodado correlacionado con estratos superiores de la Formacion Dorotea (Cretacico Tardio, Maastrichtiano), recolectados en la parte sur de la sierra homomma, ubicada al noreste de Puerto Natales (51°41'20,4"S, 72°26'07,4"W), Region de Magallanes, Chile. Se r...
Brachydelphis mazeasi Muizon, 1988a, from the Pisco Formation (middle Miocene, Peru), is an odontocete originally known from 2 incomplete skulls and a few associated postcranial elements, assigned to the family Pontoporiidae, and to the subfamily Brachydelphininae (¼ Brachydelphinae) created to include this genus. The holotype is considered here as...
New decapod crustacean fossils collected from Eocene rocks of Algarrobo, Chile, have yielded a new genus and species of callianassid, Melipal chilensis. The large sample size makes it possible to recognize marked sexual dimorphism of the major cheliped and pronounced heterochely in the new taxon. Cretaceous fossils from Algarrobo are referred to Pr...
La Formación Bahía Inglesa en la Región de Atacama, es reconocida como la formación de mayor abundancia en vertebrados fósiles cenozoicos, registros que incluyen cocodrilos, sirenios, cetáceos, pinnípedos, tiburones y aves. Estas últimas se encuentran representadas por 6 familias: Pelagornithidae, Phalacrocoracidae, Sulidae, Spheniscidae, Diomedeid...
The fossil skull of a procellariid, Pachyptila sp., from Late Miocene marine sediments of the Bahía Inglesa Formation (Midde Miocene-Pliocene) of Northern Chile is described. The fossil is compared with extant species of the family Procellariidae. This discovery represents the first Neogene fossil record of the genus Pachyptila from South America.
The fossil skull of a procellariid, Pachyptila sp., from Late Miocene marine sediments of the Bahía Inglesa Formation (Midde Miocene-Pliocene) of Northern Chile is described. The fossil is compared with extant species of the family Procellariidae. This discovery represents the first Neogene fossil record of the genus Pachyptila from South America.
Cited By (since 1996):3, Export Date: 4 July 2013, Source: Scopus, :doi 10.1016/j.crpv.2006.06.001, Language of Original Document: English, Correspondence Address: Bianucci, G.; Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria, 53, 56126 Pisa, Italy; email: bianucci@dst.unipi.it, References: Aranda-Manteca, F.J., Domning, D.P.,...
A rich elasmobranch assemblage is reported from the Early Neogene marine sediments of the lower member of the Navidad Formation, Central Chile. The fauna comprise Squalus sp., Pristiophorus sp., Heterodontus sp., Megascyliorhinus trelewensis, Carcharias cuspi- data, Odontaspis ferox, Isurus oxyirinchus, Isurus hastalis, Cosmopolitodus hastalis, Car...
Fossil crocodilians are well known from vertebrate bearing localities in South America, but the last record of the group in Chile is from the Cretaceous. No living crocodilians occur in Chile today, and the timing of their disappearance from the country is unknown. We provide the first post-Mesozoic report of crocodilian remains from late Miocene m...
The first record of Neogene holocephalan chondrichthyans fishes from the Bahía Inglesa Formation is documented. The new material is Middle Miocene-Late Miocene in age and comprises two dental plates coming from fossiliferous beds located to the southeast of southern Caldera. Based on its characteristic features and comparison with living and other...
The rostral tooth morphology of Ischyrhiza chilensis (Philippi, 1887) is examined on the basis of a new material from the Maastrichtian of the Quiriquina Formation, central Chile. Oral teeth of a new sclerorhynchid, Biropristis landbecki gen. et sp. nov., are described from the same formation of the Algarrobo locality. These discoveries provide new...
The first record of Neogene holocephalan chondrichthyans fishes from the Bahía Inglesa Formation is documented. The new material is Middle Miocene-Late Miocene in age and comprises two dental plates coming from fossiliferous beds located to the southeast of southern Caldera. Based on its characteristic features and comparison with living and other...
Aspidorhynchid remains are described from the Upper Cretaceous Quiriquina Formation of Chile. Although only fragments have been recovered, their characteristics allow to identify them as Belonostomus longirostris Lambe. This is the first record of this genus confirmed in Chile. B. longirostris Lambe had a South American/Pacific marginal pattern of...
