tanaidacea मीनिंग इन हिंदी

"' Pagurapseudidae "'is a family of crustaceans in the order Tanaidacea.
In the Isopoda and Tanaidacea ( superorder Peracarida ), the last abdominal body segment is fused with the telson, forming a " pleotelson ".
The remaining Peracarida orders are the cryptic and either moderately abundant, Cumacea and Tanaidacea, or are extremely rare and relictual, Mictacea, Spelaeogriphacea, and Thermosbaenacea.
Tanaidacea is a group of 1, 500 species which are small burrowing or tube-dwelling crustaceans with a short carapace ( covering two thoracic segments ) that possess a pair of chelate second thoracopods ( gnathopods ).
Molecular studies by Jarman " et al . " ( 2000 ), Spears " et al . " ( 2005 ) and Meland & Willassen ( 2007 ) ( which was derived from Spears " et al . " ( 2005 ) by adding 22 mysidacean taxa to those 26 taxa ) suggest a phylogeny with some elements similar to that proposed by Richter & Scholtz ( 2001 ), but disprove the monophyly of both the Edriophthalma and the Mysidacea and do not possess a basal eumalacostracan taxa or a basal peracarid taxa ( the Hoplocarida and the Syncarida, respectively in ) : The Amphipoda ( with Spleogriphacea ) form a clade with the Lophogastrida, the Isopoda are in a derived clade with the Cumacea and Tanaidacea, while most importantly the Mysida in all three analyses falls basal to the non-Peracarida subtree, which however has a limited morphological support ( Poore, 2005 ).