A5031495388- Ichthyology and Marine Biology
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Paleontology and Evolutionary Biology
- Fish Ecology and Management Studies
- Evolution and Paleontology Studies
- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Plant Diversity and Evolution
- Turtle Biology and Conservation
- Marine animal studies overview
- Pleistocene-Era Hominins and Archaeology
- Geology and Paleoclimatology Research
- Museums and Cultural Heritage
- Marine and environmental studies
- Wildlife Ecology and Conservation
- Ecology and biodiversity studies
- Invertebrate Taxonomy and Ecology
- Lepidoptera: Biology and Taxonomy
- Archaeology and Natural History
- Genetic diversity and population structure
- Freshwater macroinvertebrate diversity and ecology
- Archaeology and ancient environmental studies
- Identification and Quantification in Food
- Aquatic Invertebrate Ecology and Behavior
Field Museum of Natural History
2008-2023
American Museum of Natural History
2004-2019
University of Chicago
2019
Amalgamated Sugar (United States)
2009
Theodore Roosevelt High School
1987-2004
Universidade de São Paulo
2004
ABSTRACT The comparative osteology, phylogenetic relationships, and historical biogeography of all known taxa fossil living amiid fishes (Halecomorphi: Amiidae) are investigated in detail. Previously, the detailed osteology nearly amiids was unknown. We present first well-supported comprehensive phylogeny for fishes. synthesize clearly documented data on other halecomorph with phenomena such as ontogeny, biogeography, stratigraphic paleontology, paleoecology (both “stationary” “historical”)....
ABSTRACT The comparative osteology and phylogenetic relationships of fossil living paddlefishes (Polyodontidae) are investigated in detail for the first time. This peculiar, poorly known group is great significance to studies primitive actinopterygians, because it one only two chondrostean families that have survived present. Consequently frequently used as an outgroup many groups higher-level actinopterygian (and even osteichthyan) interrelationships. family has a long but spotty record...
Freshwater stingrays from the Fossil Butte Member of late early Eocene Green River Formation Wyoming are reviewed, and a new genus species fossil stingray is described. †Asterotrygon maloneyi, n.gen., n.sp. remarkably well preserved known articulated skeletons juveniles adults, both males females. It distinguished all Recent stingrays, including †Heliobatis radians same formation, by unique presence dorsal fin covered with dermal denticles directly anterior to caudal stings. Other characters...
Sturgeons of the family Acipenseridae comprise 25 extant species, making it most species-rich basal (i.e., nonteleostean) actinopterygians. Because their position within Actinopterygii, anatomical study sturgeons has a long and rich history, although there remains much to be discovered. Here we describe illustrate skeletal anatomy shortnose sturgeon, Acipenser brevirostrum, as representative Acipenseridae. which is distributed along east coast North America, relatively small species reaching...
ABSTRACT †Hypsidoris farsonensis Lundberg and Case (1970) from the Eocene Green River Formation of Wyoming, is redescribed in detail based on much new material. The material consists (1) better preparations original type referred specimens, (2) many previously unreported specimens with exceptionally detailed preservation. Based information presented here †H. interpreted (A) not to belong Ictaluridae as originally proposed, (B) be sister group all known catfish families other than...
Four main potential contributions of fossils to phylogenetic systematics and historical biogeography are (1) provide additional taxa which (when sufficiently well preserved) can give new morphological ontogenetic data in addition those provided by Recent species; (2) increase the known biogeographic range a taxon; (3) help establish minimum age for (4) present fossil biotas that be examined patterns not recognizable younger (including Recent) or older biotas. The first three points have been...
The feeding mechanism of gars (Ginglymodi : Lepisosteidae) is characterized by cranial elevation and lower jaw rotation but minimal kinesis. Gar jaws have numerous, sharply pointed, elongate teeth for capture evasive prey. Their mandibles range from relatively short to extremely long depending on the species. Jaw length lever dimensions were hypothesized affect biomechanics force motion during feeding, according simple mechanical models muscles exerting through first- or third-order levers....
Abstract A large sample of embryological material the North American paddlefish Polyodon spathula (Acipenseriformes: Polyodontidae) confirms that early development in is very similar to reported for sister group Polyodontidae, sturgeons (Acipenseridae). illustrates many basic aspects acipenseriform (and actinopterygian) head have not been adequately described. In this paper, we provide an overview external features cranial using scanning electron microscopy. The observations are correlated...
Abstract The composition of the Antarctic fish fauna has undergone remarkable changes through time. Fossil fishes are known from Devonian, Jurassic, Cretaceous and early Tertiary deposits region. Recent does not appear to be derived any part fossil faunas. Devonian includes agnathans, placoderms, acanthodians, chondrichthyans osteichthyans all belonging families now extinct. Jurassic is by only one species, a neopterygian extinct family Archaeomaenidae. Both Palaeozoic Mesozoic faunas...
We describe methods for preparing dry skeletons of virtually any osteichthyan species with a well-ossified skeleton, including very large specimens (e.g., > 1 m Megalops atlanticus). Our approach differs from those conventionally used to prepare tetrapods in that (1) fairly complete dissection the specimen is required at outset processing; and (2) we use an alcohol dehydration step rapidly specimen. Similar techniques can be well-calcified chondrichthyan skeletons. also outline steps making...
A new species of sturgeon (Acipenseridae), † Psammorhynchus longipinnis n. gen. and sp., is described based on a single well-preserved specimen from the Upper Cretaceous Judith River Formation Montana. Although only individual, osteological detail we are able to describe for this extensive because completeness specimen, relatively three-dimensional preservation, soft, loosely consolidated sandstone matrix in which it was contained (allowing some dissection reveal internal bones head region)....
A pleurodontan iguanian from the Green River Formation (Eocene) is described in detail and named. The new taxon known only a single specimen preserving all areas of body. Although many bone surfaces are eroded, almost skeleton present some cartilaginous elements preserved. shares important characteristics with extant anisolepines leiosaurines, including morphology placement caudal autotomy planes, postxiphisternal inscriptional ribs, notched or fenestrated clavicles that expanded proximally....