Results 131 to 140 of about 512 (155)
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First Lepisosteidae (Holostei: Ginglymodi) from the Late Cretaceous of Japan
Historical BiologyYoshitaka Yabumoto +2 more
exaly +2 more sources
Comptes Rendus De L'Académie Des Sciences Earth & Planetary Sciences Série II, Sciences De La Terre Et Des Planètes =, 2000
Abstract Scales of the lepisosteid fish † Obaichthys decoratus and † O.? laevis, from the Lower Cretaceous of the Araripe Plateau (Northeast Brazil) resemble those of palaeoniscoid-type, in which a ganoine layer overlies a dentin layer located above a basal plate composed of lamellar bone.
Paulo Brito +2 more
exaly +2 more sources
Abstract Scales of the lepisosteid fish † Obaichthys decoratus and † O.? laevis, from the Lower Cretaceous of the Araripe Plateau (Northeast Brazil) resemble those of palaeoniscoid-type, in which a ganoine layer overlies a dentin layer located above a basal plate composed of lamellar bone.
Paulo Brito +2 more
exaly +2 more sources
Copeia, 2014
The lower jaw of Lepisosteus osseus has been described as containing a U-shaped cartilaginous structure identified as a detached portion of Meckel's cartilage. We investigated this structure through study of a growth series of L. osseus, including cleared-and-stained specimens and histological preparations.
Casey Dillman +2 more
exaly +2 more sources
The lower jaw of Lepisosteus osseus has been described as containing a U-shaped cartilaginous structure identified as a detached portion of Meckel's cartilage. We investigated this structure through study of a growth series of L. osseus, including cleared-and-stained specimens and histological preparations.
Casey Dillman +2 more
exaly +2 more sources
A Standardized Procedure for Internal Sex Identification in Lepisosteidae
North American Journal of Fisheries Management, 2001Abstract During population dynamic and reproductive biology research on three species of Lepisosteidae (i.e., alligator gar Lepisosteus spatula (also known as Atractosteus spatula), longnose gar L. osseus, and spotted gar L. oculatus), we determined that misidentification of sex through gross examination of the gonads was probable.
Allyse M. Ferrara, Elise R. Irwin
exaly +2 more sources
Liver lesions in the gar fish (Lepisosteidae) as biomarkers of exposure
Marine Environmental Research, 1996Abstract The objective of this research was to identify lesions and diseases in fish as biomarkers of exposure to environmental contaminants from polluted wetlands typical of the Mississippi River Basin. Devil's Swamp, located northwest of Baton Rouge, Louisiana, is an ecosystem contaminated with a variety of metals and organic chemicals.
William R. Hartley +2 more
openaire +1 more source
Journal of Vertebrate Paleontology, 1998
ABSTRACT Gars (Lepisosteidae, Actinopterygii) are reported from Madagascar for the first time, from exposures of the Upper Cretaceous (?Campanian) Maevarano Formation in the Mahajanga Basin, northwestern Madagascar. The material includes relatively common isolated scales, and vertebral centra, teeth, fin rays, and dermal cranial elements, all assigned ...
David Krause, Michael D Gottfried
exaly +2 more sources
ABSTRACT Gars (Lepisosteidae, Actinopterygii) are reported from Madagascar for the first time, from exposures of the Upper Cretaceous (?Campanian) Maevarano Formation in the Mahajanga Basin, northwestern Madagascar. The material includes relatively common isolated scales, and vertebral centra, teeth, fin rays, and dermal cranial elements, all assigned ...
David Krause, Michael D Gottfried
exaly +2 more sources
Copeia, 1975
ECKROAT, L. R. 1971. Lens protein polymorphisms in hatchery and natural populations of brook trout, Salvelinus fontinalis (Mitchell). Trans. Amer. Fish. Soc. 100:527-537. 1973. Allele frequency analysis of five soluble protein loci in brook trout, Salvelinus fontinalis (Mitchell). Ibid. 102:335-341. FUJINO, K. 1970.
John C. Landolt, Loren G. Hill
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ECKROAT, L. R. 1971. Lens protein polymorphisms in hatchery and natural populations of brook trout, Salvelinus fontinalis (Mitchell). Trans. Amer. Fish. Soc. 100:527-537. 1973. Allele frequency analysis of five soluble protein loci in brook trout, Salvelinus fontinalis (Mitchell). Ibid. 102:335-341. FUJINO, K. 1970.
John C. Landolt, Loren G. Hill
openaire +1 more source
Family Lepisosteida (Gars) as Living Fossils
1984Gars (Fig. 1). are primitive neopterygian fishes with elongate snout, plicidentine teeth, opisthocoelous vertebrae, heavy dermal bone retaining ganoid ornamentation, ganoid scales, a semiheterocercal tail, and fulcral scales on the median fins. The elongate snout is an ontogenetic product of ethmoid elongation and is correlated with many of the ...
E. O. Wiley, Hans-Peter Schultze
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2022
Determining paleotemperatures in terrestrial environments are much more challenging than those in the ocean because of stratigraphic inconsistencies, strong spatial and temporal variations in temperature, and a paucity of well-tested methods. Here we utilize the ganoine scales of gars from the family Lepisosteidae to calibrate a new terrestrial ...
Katelyn Gray, Mark Brandon, Ruth Blake
openaire +1 more source
Determining paleotemperatures in terrestrial environments are much more challenging than those in the ocean because of stratigraphic inconsistencies, strong spatial and temporal variations in temperature, and a paucity of well-tested methods. Here we utilize the ganoine scales of gars from the family Lepisosteidae to calibrate a new terrestrial ...
Katelyn Gray, Mark Brandon, Ruth Blake
openaire +1 more source