protostome การใช้

• The traditional view was that lophophorates were a mix of protostome and deuterostome features.
• For example it took me two hours to find a decent explanation of protostome and deuterostome.
• Which end forms first in ontogeny is a criterion used to classify animals into protostome and deuterostome.
• Some of the ( lesser known ) animals with true coeloms shared both deuterstome and protostome traits.
• The nervous systems of protostome and deuterostome descendants of this ancestor may have arisen independently from these two distinct parts.
• Even if it is not a protostome, it is widely accepted as a member of the more inclusive bilaterian clade.
• Additional support comes from work on the development of the polychaete annelid " Platynereis dumerilii ", another protostome.
• A multi-taxon molecular study in 2010 proposed that sea squirts are descended from a hybrid between a chordate and a protostome ancestor.
• If the Ediacaran " Kimberella " was a mollusc-like protostome ( one of the two main groups of coelomates ),
• The Chaetognatha or arrow worms have been traditionally classified as deuterostomes, though recent molecular studies have identified this group as a basal protostome lineage.
• "' Tactopoda "'is a proposed clade of protostome animals that includes the phyla Tardigrada and Euarthropoda, supported by various morphological observations.
• Also remember, not everything that's obvious to you is obvious to everyone else . " The Allies won WWII "-that would be obvious, but protostome?
• :The flatworms are no longer considered a low coelom-and-anus lacking sidebranch below the protostome-deuterostome split, but are now recognized as closer to the annelids and mollusks.
• However, " Superphylum Deuterostomia " was redefined in 1995 based on DNA molecular sequence analyses when the lophophorates were removed from it and combined with other protostome animals to form superphylum Lophotrochozoa.
• :And the deuterostomes have lost what were once considered intermediate allies like the Brachiopods and other Lophophores to the protostomes, making the deuterostomes a small early branch out of a greater protostome group.
• If so, this means that the protostome and deuterostome lineages must have split some time before " Kimberella " appeared  at least, and hence well before the start of the Cambrian.
• The consensus of studies from 1996 onwards has been that entoprocts are part of the Trochozoa, a protostome " superphylum " whose members are united in having as their most basic larval form the trochophore type.
• Protostome derives from the Greek word protostoma meaning " first mouth " ( ?????? + ????? ) whereas Deuterostome's etymology is " second mouth " from the words second and mouth ( ???????? + ????? ).
• "' List of bilateral animal orders "'contains the Bilateria of the animal subkingdom Eumetazoa, divided into four superphyla, Deuterostomia, and the three Protostome superphyla, Ecdysozoa, Platyzoa and Lophotrochozoa.
• The classification of " Kimberella " is important for scientific understanding of the Cambrian explosion : if it was a mollusc or at least a protostome, the protostome and deuterostome lineages must have diverged significantly before.