Results 41 to 50 of about 287 (128)
Better resolving ctenostome bryozoan systematics is crucial in understanding bryozoan evolution in general. Ctenostomes are a paraphyletic group of soft bodied bryozoans with a wide ecological diversity, including endolithic (boring) forms like Penetrantia.
Sebastian H. Decker +10 more
wiley +1 more source
Systematics and character evolution of capitate hydrozoans
Abstract Capitate hydrozoans are a morphologically and ecologically diverse hydrozoan suborder, currently including about 200 species. Being grouped in two clades, Corynida and Zancleida, these hydrozoans still show a number of taxonomic uncertainties at the species, genus and family levels.
Davide Maggioni +11 more
wiley +1 more source
Let's talk about sex: Mechanisms of neural sexual differentiation in Bilateria
In many animals, sex differentiation of neural circuits involves two axes: Along the first axis, particular classes of neurons are specified to produce a sex‐sensitive factor; this specification event is sex‐neutral. Along the second axis, sex information is imposed on this sex‐sensitive factor, either through hormonal or cell‐autonomous mechanisms ...
Emma C. Roggenbuck +20 more
wiley +1 more source
Erratum: An early Cambrian agglutinated tubular lophophorate with brachiopod characters [PDF]
The morphological disparity of lophotrochozoan phyla makes it difficult to predict the morphology of the last common ancestor. Only fossils of stem groups can help discover the morphological transitions that occurred along the roots of these phyla. Here, we describe a tubular fossil Yuganotheca elegans gen. et sp. nov.
Zhang, Z.-F. +14 more
openaire +1 more source
Abstract Strophomenoid brachiopods had thin, concavo‐convex shells, were ubiquitous colonizers of Palaeozoic muddy seafloors, and are hypothesized to have filter‐fed in a concave‐upward orientation. This orientation would elevate their line of commissure out of potentially lethal lophophore‐clogging mud.
Benjamin F. Dattilo +7 more
wiley +1 more source
Morphology of ctenostome bryozoans: 7. Hislopia, Echinella and Timwoodiellina
Schematic drawings of hislopiids ctenostomes showing major polypide features. Abstract Ctenostome bryozoans are a small group of gymnolaemates comprising less than 400 recent species. They are paraphyletic and ctenostome‐grade ancestors gave rise to Cheilostomata, the most dominant and speciose taxon of Bryozoa in the present day.
Thomas Schwaha +2 more
wiley +1 more source
Homology of the lophophore and its evolution within lophophorates
E. N. Temereva, T. V. Kuzmina
openaire +1 more source
Larvae, Lophophores and Chimeras in Classification
I challenge the widely held assumption, reflected in current classifications, that larvae and corresponding adults evolved from common ancestors and that animals with lophophores evolved from an ancestral lophophorate. Types of animal development are defined, and their origins are discussed in relation to the common ancestor hypothesis and ...
openaire +1 more source
Reconstructing the neuromuscular ground pattern of phylactolaemate bryozoans: new data from the Lophopodidae. [PDF]
Bibermair J +3 more
europepmc +1 more source

