A5005277200- Evolution and Paleontology Studies
- Animal Ecology and Behavior Studies
- Bat Biology and Ecology Studies
- Paleontology and Evolutionary Biology
- Morphological variations and asymmetry
- Genetic diversity and population structure
- Pleistocene-Era Hominins and Archaeology
- Health and Wellbeing Research
- Geology and Paleoclimatology Research
- Species Distribution and Climate Change
- Isotope Analysis in Ecology
- Conservation Techniques and Studies
- Marine animal studies overview
- Museums and Cultural Heritage
- 3D Surveying and Cultural Heritage
- Ichthyology and Marine Biology
- Nutrition and Health in Aging
- Muscle metabolism and nutrition
- Radioactive contamination and transfer
- Biochemical Analysis and Sensing Techniques
- Adipose Tissue and Metabolism
- Plant and Fungal Interactions Research
- Physical Activity and Health
- Yersinia bacterium, plague, ectoparasites research
- Natural Antidiabetic Agents Studies
Institut Català de Paleontologia Miquel Crusafont
2020-2022
Universitat Autònoma de Barcelona
2020-2022
National Museum of Nature and Science
2015-2022
Tokyo University of Agriculture and Technology
2016
Southern Methodist University
2010-2015
Smithsonian Institution
2014
Robert S. Peabody Museum of Archaeology
2013
Harvard University
2013
Waseda University
1980-1999
Ishinomaki Senshu University
1990-1999
Abstract Time calibration derived from the fossil record is essential for molecular phylogenetic and evolutionary studies. Fossil mice rats, discovered in Siwalik Group of Pakistan, have served as one best-known points phylogenic Although these fossils been widely used 12 Ma date Mus / Rattus split or a more basal split, conclusive paleontological evidence nodal assignments has absent. This study analyzes newly recognized characters that demonstrate lineage separation murines examines most...
Stable carbon isotope analysis in tooth enamel is a well-established approach to infer C3 and C4 dietary composition fossil mammals. The bulk of past work has been conducted on large herbivorous One important finding that their habits mammals track the late Miocene ecological shift from forest woodland savannah. However, few studies isotopes small exist due limitations imposed by size rodent teeth, isotopic behaviors climate change remain unknown. Here we evaluate impact fine-scale...
A general lineage concept is widely adopted in studies of species delimitation for extant taxa with DNA sequence data. In the concept, are separately evolving metapopulations that acquire sets properties during process speciation. Murine rodents from Miocene Siwalik Group Pakistan have an excellent fossil record showing temporal trends morphological change, and therefore ideal to observe divergence as evidence. Here, we review evolution murine sense draw lines evidence separation. For...
Past ecological responses of mammals to climate change are recognized in the fossil record by adaptive significance morphological variations. To understand role dietary behavior on functional adaptations dental morphology rodent evolution, we examine evolutionary tooth shape late Miocene Siwalik murine rodents, which experienced a shift toward C4 diets during indicated carbon isotopic evidence. Geometric morphometric analysis outline upper first molars captures dichotomous lineages murines,...
Abstract The early late Miocene is an interval of increased diversification for murine rodents. Whereas the genus Progonomys became widespread throughout Eurasia by 10 Ma, it appears from known paleontological record that southern Asia arena evolution and at base Murinae. Siwalik fossil Potwar Plateau in northern Pakistan preserves evidence relevant to unraveling this history. Murine rodents are recorded there middle Miocene, began assemblages before 11 Ma. well-established Karnimata...
Els Casots is one of the richest fossil vertebrate sites Vallès-Penedès Basin (Catalonia, Spain). It was discovered in 1989 and excavated briefly during 1990s, resulting recovery thousands remains erection several new mammal species. Excavations were resumed 2018 continue to date. Here we provide updated results regarding age, stratigraphy, biota palaeoenvironment site. The age site well constrained ~15.9 Ma thanks recent bio- magnetostratigraphic data, thus coinciding with Miocene Climatic...
Abstract For two hundred years the status of rodent suborders has been unstable. What are natural groupings extant families? The formal recognition remained challenging and consensus elusive. Classically conceived widely viewed as artificial, but no universally accepted classification emerged to reflect major features evolution. Over last decades molecular studies have established that rodents comprise three monophyletic clades. We review basis for these groups recognize them taxonomic...
Fossil records generally inform paleobiologists about extinct taxa and rates of evolution measured at the scale millions years. Good that are densely sampled through time can reveal species level details such as longevity in local sections. Yet fossil data normally do not address lineage microevolution because density sampling is insufficient to perceive patterns a precision finer than 10 6 years most cases. This study concerns splitting event murine rodents, an for which multiple samples...
Rodents are the most speciose group of mammals and display a great ecological diversity. Despite greater amount ecomorphological information compiled for extant rodent species, studies usually lack morphological data on dentition, which has led to difficulty in directly utilizing existing rodents paleoecological reconstruction because teeth common or often only micromammal fossils. Here, we infer environmental ranges extinct genera by extracting habitat from relatives linking it taxa based...
ABSTRACT Dipodid rodent fossils from Gashunyinadege at ∼17 Ma, one of the oldest Neogene localities in central Nei Mongol, China, include six genera (Heterosminthus, Plesiosminthus, Litodonomys, Sinodonomys, gen. nov., Omoiosicista, and Sicista) nine species, including four new species (P. vegrandis, sp. L. minimus, S. simplex, O. fui, nov.). The high diversity abundance dipodid rodents indicate evolution basal dipodids was centered Mongol. Omoiosicista is described on basis eight isolated...
Derived members of the enigmatic mammalian order Desmostylia have molars comprising appressed columns whose morphology does not render their function in feeding simple to discern. Here we describe a new genus and species, Ounalashkastylus tomidai, more derived than Cornwallius but less Desmostylus Vanderhoofius, which develop hypertrophied medial eminence on dentary ontogenetically. Tooth morphology, vaulted palate eminence, can rise level occlusal surface M2, suggest that desmostylids...
The papers in this volume of Historical Biology, organised and guest-edited by Drs Yuri Kimura, Lawrence J. Flynn, Yoshitsugu Kobayashi, Louis L. Jacobs, were respectfully contributed to celebr...
Fossil rodents are generally scarce in the Miocene of Japan.However, as much three taxa eomyid had been reported from early Nakamura Formation (ca.18.5 Ma) Gifu Prefecture, central Japan.In this study, we revisit one them-the small-sized taxon-and assign material to a new genus, Japaneomys, which is so far known only type locality.The genus closely related but distinguished Asianeomys , more widely distributed Central and East Asia, by having: (i) bunodont cheek teeth with lower lophids, yet...
The present study was conducted to see the effect of probucol on Streptozotocin diabetes in rats. After 2 weeks a 1% diet, 35 or 50 mg/kg were intravenously injected into male Wistar All rats became diabetic days after treatment. Thereafter, order spontaneous recovery from diabetes, 25 two diet and continued for additional weeks. with standard (group CS, n = 13) 12 13 PS) injection. One rat group PS did not develop diabetes. Two injection, only 4 groups CS showed recovery, while 11 (p <...
Here, we report a new ‘discovery’ of desmostylian fossil in the geological collection at national university Japan. This was unearthed over 60 years ago and donated to university. Owing original hand-written note kept with combination interview investigation, were able reach two equally possible sites town Tsuchiyu Onsen, Fukushima. Through interviews, learned that discovered during construction debris flow barrier it recognized as ‘dinosaur’ bone among locals displayed Village Hall...
In Asia, the first find of an eomyid rodent was reported almost one century after studies family Eomyidae in North America and Europe. Since then, rodents have been increasingly found Asia particularly over past two decades. Here, we review Asian record this at genus level. Currently, 22 species within 14 genera were from including seven endemic rare materials apeomyine eomyids. Eomyids emphasize palaeogeographic importance considering intercontinental dispersal events small mammals. With...
Abstract Murid rodents (Rodentia: Myomorpha: Muroidea: Muridae) represent the most diverse and abundant mammalian group. In this study, we reconstruct a dated phylogeny of family using multilocus dataset (six nuclear nine mitochondrial gene fragments) encompassing 160 species representing 82 distinct murid genera from four extant subfamilies (Deomyinae, Gerbillinae, Lophiomyinae, Murinae). comparison with previous studies on or muroid rodents, our work stands out for implementation multiple...
Abstract The lower incisor enamel microstructure of the fossil rodent family Eomyidae was believed to be three‐layered and highly derived but rather uniform throughout clade. Here, we describe a new four‐layered schmelzmuster in consisting three‐fold portio interna with longitudinal oriented, uniserial Hunter‐Schreger bands one‐fold externa, accounting for unique character combination Rodentia. This type has developed early eomyid evolution is detectable already late Eocene (Chadronian)...