A5007788890- Marine animal studies overview
- Ichthyology and Marine Biology
- Evolution and Paleontology Studies
- Cephalopods and Marine Biology
- Paleontology and Evolutionary Biology
- Marine and coastal plant biology
- Paleontology and Stratigraphy of Fossils
- Fish biology, ecology, and behavior
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Coral and Marine Ecosystems Studies
- Geology and Paleoclimatology Research
- Bat Biology and Ecology Studies
- Marine and fisheries research
- Primate Behavior and Ecology
- Underwater Acoustics Research
- Marine Biology and Ecology Research
- Morphological variations and asymmetry
- Pleistocene-Era Hominins and Archaeology
- Geological and Tectonic Studies in Latin America
- Marine and environmental studies
- Fish Biology and Ecology Studies
- earthquake and tectonic studies
- Animal Ecology and Behavior Studies
- Animal Vocal Communication and Behavior
National University of San Marcos
2016-2025
Museo de Historia Natural
2014-2025
Regione Puglia
2018
Universidad de Lima
2018
Center for Southeast Asian Studies
2007
Universidad Nacional Agraria La Molina
2003
New penguin fossils from the Eocene of Peru force a reevaluation previous hypotheses regarding causal role climate change in evolution. Repeatedly it has been proposed that penguins originated high southern latitudes and arrived at equatorial regions relatively recently (e.g., 4-8 million years ago), well after onset latest Eocene/Oligocene global cooling increases polar ice volume. By contrast, new discoveries middle late reveal invaded low >30 earlier than prior data suggested, during one...
Abstract The Middle Miocene has been identified as a time of great diversification in modern lineages now distributed tropical South America, and when basic archetypal traits defining Amazonia appear, including climatic humid conditions, floral physiognomy phylogenetic composition rainforests. Nonetheless, localities America are poorly known, especially at low latitudes where only one species‐rich locality, La Venta Colombia, extensively studied. present contribution describes the mammal...
Hundreds of fossil marine vertebrates cropping out at Cerro Colorado (Pisco Basin, Peru) are identified and reported on a 1:6500 scale geological map in joined stratigraphic section. All the fossils from lower strata Pisco Formation, dated this area to late middle or early Miocene. They particularly concentrated (88%) interval 40 75 m above unconformity with underlying Chilcatay Formation. The impressive assemblage includes more than 300 specimens preserved as bone elements belonging mostly...
The sequence stratigraphic framework and a summary of the fossil fauna upper Miocene portion Pisco Formation exposed along western side Ica River (southern Peru) is presented through new geological map encompassing an area about 200 km 2 detailed chronostratigraphic analyses. Extensive field mapping sedimentological study outcrop sections have shown that cyclical sediment unit composed at least three fining-upward, unconformity-bounded depositional sequences, designated P0, P1, P2 from...
Although modern beaked whales (Ziphiidae) are known to be highly specialized toothed that predominantly feed at great depths upon benthic and benthopelagic prey, only limited palaeontological data document this major ecological shift. We report on a ziphiid-fish assemblage from the Late Miocene of Peru we interpret as first direct evidence predator-prey relationship between ziphiid epipelagic fish. Preserved in dolomite concretion, skeleton stem Messapicetus gregarius was discovered together...
One-hundred and ninety-two fossil marine vertebrate specimens, preserved as bone elements cropping out at Cerro Los Quesos (Pisco Basin, Peru), are identified reported on a 1:4,000 scale geological map in the corresponding stratigraphic section. All fossils originate from Pisco Formation, which is dated this area to late Miocene (from 7.55 Ma ≥6.71 Ma, based 40Ar/39Ar analyses of three volcanic ash layers along section). Specimens particularly concentrated near top two main hills, where...
Abstract Exceptionally preserved delicate baleen microstructures have been found in association with the skeleton of a late Miocene balaenopteroid whale dolomite concretion Pisco Formation, Peru. Microanalytical data (scanning electron microscopy, probe microanalysis, X-ray diffraction) on fossil are provided and results discussed terms their taphonomic paleoecological implications. Baleen fossilization modes at this site include molding plates tubules, phosphatization. A rapid formation was...
—The fossil record of odontocetes (toothed cetaceans) is relatively scarce during the Oligocene and early Miocene compared with later in Pliocene; most odontocete families from these epochs are known by a limited number species specimens. Among those, Squalodelphinidae family small- to medium-sized platanistoids single-rooted teeth, which until now has included only four genera based on diagnostic material, Europe, Argentina, North America. Recent field work Pisco-Ica desert, southern coast...
The Ziphiidae (beaked whales) represent a large group of open-ocean odontocetes (toothed cetaceans), whose elusive and deep diving behavior prevents direct observation in their natural habitat. Despite generally body size, broad geographical distribution, high species number, ziphiids thus remain poorly known. Furthermore, the evolutionary processes that have led to extreme adaptations impressive extant diversity are still understood. Here we report new fossil beaked whales from late Miocene...
A key step in the evolutionary history of Odontoceti (echolocating toothed cetaceans) is transition from ancestral heterodont condition – characterized by presence double-rooted cheek teeth bearing accessory denticles to homodont dentition displayed most extant odontocete species. During last few decades, new finds and reassessment specimens collections revealed an increased morphological disparity amongst Oligo–Miocene odontocetes. Based on a partly articulated skeleton late Early Miocene...
Strata of Chilcatay and Pisco formations exposed in the Ica Desert (East Basin, southern Peru) preserve one most complete rich records Miocene marine vertebrates world. Despite its exceptional importance, chronostratigraphy these fossil-bearing deposits has been only sporadically studied literature until recently. This work presents a detailed reconstruction chronostratigraphic framework, achieved by mapping measuring seven sections (totaling height almost 1000 m) along western side River....
The Miocene Pisco Formation, broadly exposed in the Ica Desert of southern Peru, is among most outstanding Cenozoic marine Fossil-Lagerstätten worldwide. It renowned for its exceptional preservation and abundance vertebrate fossils, including a rich assemblage whales dolphins (Cetacea). Here, we integrate taphonomic data on 890 gathered through 16 different localities. Our observations range from taxonomic distribution, articulation, completeness, disposition orientation skeletons, to...
The evolution of baleen whales (Mysticeti) comprises two main phases, namely, (i) a Paleogene phase, which saw the diversification stem lineages, and (ii) Neogene dominated by modern-looking, toothless, baleen-bearing forms in monophyletic group Chaeomysticeti. These phases are separated global turnover event coinciding with gap—or “dark age”—in mysticete fossil record. This dark age occurred between 23 ~18 Ma is apparently detected worldwide, except Zealandia. Here, we report on new from...
Click to increase image sizeClick decrease size ACKNOWLEDGMENTS P. Loubry (MNHN) took the photographs. We are much indebted Baby, M. Benammi, S. Brusset, D. De Franceschi, and N. Espurt for their participation in field work. This research project was undertaken thanks IRD-Perupetro S.A. agreement, supported by IRD (UR 154), Devanlay Peru S.A., French INSU-CNRS programs DyETI ECLIPSE II, headed Baby P.-O. Antoine, respectively. Constructive comments of E. Fitzgerald, an anonymous reviewer,...