Fast evolving 18S rRNA sequences from Solenogastres
(Mollusca) resist standard PCR amplification and give new insights into mollusk substitution rate heterogeneity.
2006) isolated two Gbx genes in Solenogastres
and the cephalopod Nautilus pompilius.
The cylindrical, vermiform, sclerite-covered Aplacophora has been a perplexing taxon of molluscs ever since the first two species, representatives of the only two clades, were discovered: Chaetoderma nitidulum Loven, 1844, Caudofoveata (=Chaetodermomorpha Pelseneer) and Neomenia carinata Tullberg, 1875, Solenogastres
At the bathyal level, the other dominant organisms are in the following order: amphipods, isopods, and tanaidacian crustaceans; in the abyssal plains, tanaidacians, bivalves, and isopods; in the oceanic trenches, bivalves, solenogastres
(Aplacophora), acorn worms (Enteropneusta), bryozoans, tanaidacians, and spoon worms (Echiurida).
Gastropoda: Prosobranchiata: Rhipidoglossa, Docoglossa, Tectibranchiata, Polyplacophora, Solenogastres
has a simpler neural organization in the head region, being regarded as primitive (Scheltema, 1993, 1996), although opposing views have been offered (Salvini-Plawen, 1985; Salvini-Plawen and Steiner, 1996).
Contributions a l'histoire des Solenogastres
from the eastern coast of North America.
Ventroplicida Boettger, 1956; Solenogastres
Gegenbaur, 1878 [partim], Salvini-Plawen, 1967.
(= Neomeniomorpha), Caudofoveata (= Chaetodermomorpha), and Polyplacophora were grouped in the subphylum Aculifera, and the Monoplacophora, Bivalvia, Gastropoda, Scaphopoda, and Cephalopoda were placed in the subphylum Conchifera.