New Cretaceous lungfishes (Dipnoi, Ceratodontidae) from western North America [PDF]
AbstractCeratodontid lungfishes are generally rare, poorly represented elements of North America’s Mesozoic ecosystems, with previously known maximum diversity in the Late Jurassic. Herein we describe four new species of the form genusCeratodus, from the Cretaceous of the Western Interior, considerably expanding fossil representation of post-Triassic ...
Joseph A. Frederickson +1 more
openaire +1 more source
Taxonomic Composition and Trophic Structure of the Continental Bony Fish Assemblage from the Early Late Cretaceous of Southeastern Morocco [PDF]
International audienceThe mid-Cretaceous vertebrate assemblage from south-eastern Morocco is one of the mostdiversified continental vertebrate assemblages of this time worldwide.
Boudad, Larbi +5 more
core +4 more sources
Intra-Testicular Signals Regulate Germ Cell Progression and Production of Qualitatively Mature Spermatozoa in Vertebrates [PDF]
Spermatogenesis, a highly conserved process in vertebrates, is mainly under the hypothalamic-pituitary control, being regulated by the secretion of pituitary gonadotropins, FSH and LH, in response to stimulation exerted by Gonadotropin Releasing Hormone (
Gilda Cobellis +6 more
core +2 more sources
Evolution and Development of the Atrial Septum
ABSTRACT The complete division of the atrial cavity by a septum, resulting in a left and right atrium, is found in many amphibians and all amniotes (reptiles, birds, and mammals). Surprisingly, it is only in eutherian, or placental, mammals that full atrial septation necessitates addition from a second septum.
Bjarke Jensen +2 more
wiley +1 more source
The Lungfish: Creature from the Past [PDF]
The survivor from prehistoric times, the salmon-fleshed Queensland lungfish, may fall victim to agricultural destruction of its ...
Grigg, Gordon C.
core
The Chinchilla Local Fauna: an exceptionally rich and well-preserved Pliocene vertebrate assemblage from fluviatile deposits of south-eastern Queensland, Australia [PDF]
The Chinchilla Sand is a formally defined stratigraphic sequence of Pliocene fluviatile deposits that comprise interbedded clays, sands, and conglomerates located in the western Darling Downs, south-east Queensland, Australia.
Louys, Julien, Price, Gilbert
core +1 more source
The pH sensitivity of Aqp0 channels in tetraploid and diploid teleosts
ABSTRACT Water homeostasis and the structural integrity of the vertebrate lens is partially mediated by AQP0 channels. Emerging evidence indicates that external pH may be involved in channel gating. Here we show that a tetraploid teleost, the Atlantic salmon, retains 4 aqp0 genes (aqp0a1, ‐0a2, ‐0b1, and ‐0b2), which are highly, but not exclusively ...
Francois Chauvigné +5 more
wiley +1 more source
The Monogenean Parasite Fauna of Cichlids: A Potential Tool for Host Biogeography
We discuss geographical distribution and phylogeny of Dactylogyridea (Monogenea) parasitizing Cichlidae to elucidate their hosts′ history. Although mesoparasitic Monogenea (Enterogyrus spp.) show typical vicariant distribution, ectoparasitic representatives from different continents are not considered sister taxa, hence their distribution cannot result
Antoine Pariselle +6 more
wiley +1 more source
Ig heavy chain genes and their locus in grass carp Ctenopharyngodon idella [PDF]
The cDNA and genomic sequences of IgD and IgZ were characterized in grass carp Ctenopharyngodon idella in the present study, and with the identification of a BAC clone covering zeta, mu, and delta genes, the IgH locus containing these Ig genes and other ...
Chang, M. X. +9 more
core +1 more source
Darwin, Haeckel, and the “Mikluskan gas organ theory”
Abstract A previously unknown reference to the Russian ethnologist, biologist, and traveler Nikolai N. Miklucho‐Maclay (1846–1888) was discovered in correspondence between Charles Darwin (1809–1882) and Ernst Haeckel (1834–1919). This reference has remained unknown to science, even to Miklucho‐Maclay's biographers, probably because Darwin used the ...
Ingmar Werneburg +2 more
wiley +1 more source

