Results 161 to 170 of about 3,212 (211)

Topology-dependent asymmetry in systematic errors affects phylogenetic placement of Ctenophora and Xenacoelomorpha [PDF]

open access: yesScience Advances, 2020
The evolutionary relationships of two animal phyla, Ctenophora and Xenacoelomorpha, have proved highly contentious. Ctenophora have been proposed as the most distant relatives of all other animals (Ctenophora-first rather than the traditional Porifera ...
Paschalia Kapli, Maximilian J Telford
exaly   +1 more source

A speculation on the classification system of the Ctenophora [PDF]

open access: yesPublications of the Seto Marine Biological Laboratory, 2014
Standing on the close relationship between the Cestida and the newly found Lobatolampea tetragona Horita, the classificational arrangement of the higher taxa of the Ctenophora is revised by plotting respective taxa at their adequate sites in the flow of ...
Takasi Tokioka, Tokioka Takasi
exaly   +2 more sources
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Ctenophora

2015
AbstractThe ctenophore nervous system is very complex with various specialized sensory cells, peripheral nerve nets, a centralized apical organ, neurons identifiable in all animal layers (epidermis, mesoglea, and gastrodermis), and with extensive regional specialization.
Mark Q. Martindale, Jonathan Q. Henry
openaire   +2 more sources

Ctenophora

2017
This chapter describes the taxonomy of ctenophores. The ctenophores, or comb jellies, are gelatinous metazoans belonging to a small and entirely marine phylum of about 150 species. They are mostly planktonic, with the exception of the benthic order Platyctenida, where only the larvae are planktonic.
Priscilla Licandro, Dhugal J. Lindsay
openaire   +1 more source

Gap Junctions in Ctenophora

Gap junction proteins form specialized intercellular communication channels, including electrical synapses, that regulate cellular metabolism and signaling. We present a molecular inventory of the gap junction proteins-innexins (INX-like) in ctenophores, focusing on two reference species, Pleurobrachia bachei and Mnemiopsis leidyi.
Andrea B, Kohn, Leonid L, Moroz
openaire   +2 more sources

Brief History of Ctenophora

Ctenophores are the descendants of the earliest surviving lineage of ancestral metazoans, predating the branch leading to sponges (Ctenophore-first phylogeny). Emerging genomic, ultrastructural, cellular, and systemic data indicate that virtually every aspect of ctenophore biology as well as ctenophore development are remarkably different from what is ...
openaire   +2 more sources

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