We do know that âlorryâ first appeared in print in the early 19th century meaning âa long, low wagon,â and by 1911 had acquired its modern meaning of âa large motor vehicle used to carry cargo.â. Compared to the fog surrounding âlorry,â the roots of âtruckâ in the âlarge vehicleâ sense are satisfyingly clear.ou do not need to use your real name (although it would be nice to do so) or your real email address. All comments are, however, held for moderation, so it may take a day or two for yours to appear.
Polyplacophorans include about 600 extant species. Entirely marine, they inhabit hard bottoms and rocky coasts in all of the world's oceans. Although commonly intertidal, living chitons have been dredged from waters as deep as 7000 m. Of the two subclasses, Paleoloricata and Neoloricata, only the latter is represented by living examples. The shell plate of a neoloricatan extends beneath the adjacent plate. Lacking this feature, the paleoloricatates are considered less derived.
Some major classes of mollusks include the bivalves (like clams), cephalopods (like octopuses and squids), aplacophorans (worm-like mollusks), chitons, monoplacophorans, scaphopods (tusk shells), and gastropods (like snails and slugs).Source(s): http://www.carnegiemnh.org/mollusks/abou... just now. Report Abuse. The living mollusks are placed into seven classes (some workers combine the Solenogastres and Caudofoveata into a single class called Aplacophora): Solenogastres Caudofaveata Polyplacophora Scaphopoda Cephalopoda Bivalvia Gastropoda There are over 50,000 different types of mollusks alive today.