Results 21 to 30 of about 3,109 (199)

Morphology and Molecular Phylogeny of Endosymbiotic Ciliates (Peritrichia, Mobilida) of Marine Invertebrates with Descriptions of Two Novel Species Urceolaria clepsydra n. sp. and Urceolaria bratalia n. sp. [PDF]

open access: yesJ Eukaryot Microbiol
ABSTRACT Mobilid ciliates are a morphologically distinct group of protists that form a wide range of symbiotic relationships with aquatic animals and includes three subgroups: Trichodinidae, Urceolariidae, and Polycyclidae. Trichodinids are best known for infecting fishes, whereas urceolariids infect diverse marine invertebrates.
Martinez G, Leander BS, Park E.
europepmc   +2 more sources

Taxonomic composition and assemblage structure of brachiopods from two submarine caves in the Aegean Sea, Eastern Mediterranean

open access: yesThe European Zoological Journal, 2021
Brachiopods exhibit a particular preference for cryptic habitats such as submarine caves. However, their assemblages have rarely been investigated quantitatively in this habitat.
M. A. Bitner, V. Gerovasileiou
doaj   +1 more source

First data on the organization of the nervous system in juveniles of Novocrania anomala (Brachiopoda, Craniiformea)

open access: yesScientific Reports, 2020
The organization and development of the nervous system are traditionally used for phylogenetic analysis and may be useful for clarification of evolution and phylogeny of some poor studied groups.
E. Temereva
semanticscholar   +1 more source

EARLY PERMIAN BRACHIOPODA AND MOLLUSCA FROM THE NORTHWEST HIMALAYA, INDIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
The present paper describes and illustrates the Early Permian marine fauna collected from the northwest Himalaya (Lahul, India). Brachiopoda dominate the fauna in terms of abundance and include the two new species Tivertonia chumikensis and Neochonetes ...
NEIL W. ARCHBOLD, MAURIZIO GAETANI
doaj   +1 more source

Molluscan Shells, Spicules, and Gladii Are Evolutionarily Deeply Conserved. [PDF]

open access: yesJ Exp Zool B Mol Dev Evol
Evolutionarily conserved transcription factor encoding genes and other genes are expressed in the epithelia that give rise to spicules (green) and/or shells (blue) in developmental stages of diverse mollusks, including polyplacophorans, aplacophorans, scaphopods, and cephalopods.
Barrera Grijalba CC   +6 more
europepmc   +2 more sources

Complete mitochondrial genome of Bugula neritina (Bryozoa, Gymnolaemata, Cheilostomata): phylogenetic position of Bryozoa and phylogeny of lophophorates within the Lophotrochozoa

open access: yesBMC Genomics, 2009
Background The phylogenetic position of Bryozoa is one of the most controversial issues in metazoan phylogeny. In an attempt to address this issue, the first bryozoan mitochondrial genome from Flustrellidra hispida (Gymnolaemata, Ctenostomata) was ...
Jang Kuem, Hwang Ui
doaj   +1 more source

Description and figures of new lectotype and paralectotype material of Recent brachiopod Thecidellina maxilla (Hedley, 1899)

open access: yesRecords of the Australian Museum, 2021
The material of Thecidellina maxilla (Hedley, 1899) from the type locality has only been illustrated as line drawings, no images have previously been published.
Jeffrey H. Robinson
doaj   +1 more source

New parasitic organisms in a productid brachiopod Eomarginifera lobata from the lower Carboniferous of the Moscow Basin, Russia [PDF]

open access: yesActa Palaeontologica Polonica
Bioclaustrations are among the best ways that parasitic associations are preserved. A new bioclaustration, Haplorygma productidophilia csp. nov., is here described from the ventral interior of the Carboniferous productid brachiopod Eomarginifera lobata ...
Olev Vinn   +2 more
doaj   +1 more source

The evolution of asymmetry in Upper Cretaceous Cyclothyris (Brachiopoda, Rhynchonellida)

open access: yes, 2020
The study of Upper Cretaceous Cyclothyris from Spain and the revision of asymmetrical rhynchonellides from numerous European collections have led to improve some systematical, biostratigraphical and palaeobiogeographical questions, allowing to update ...
M. Berrocal-Casero   +2 more
semanticscholar   +1 more source

X-ray tomographic microscopy tightens affinity of the early Cambrian Oymurania to the brachiopod stem group [PDF]

open access: yesActa Palaeontologica Polonica, 2017
The geologically rapid biotic evolution in the early Cambrian is marked by the first appearance of major groups of animals in the fossil record (e.g., Budd and Jensen 2000; Kouchinsky et al. 2012).
Artem Kouchinsky, Stefan Bengtson
doaj   +1 more source

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