SYSTEMATIC BIOLOGY

 CERCOZOANS-ICON.gif (53702 bytes)

RETURN TO TAXA OF LIFE PAGE
HOME SYLLABUS WEEKLY ASSIGNMENTS J. SYSTEMATIC BIOLOGY

SUPERGROUP RHIZARIA

The Rhizaria include an apparent eclectic mix of taxa which were defined by molecular means (e.g. Nikolaev et al., 2004) and seem to have filose rhizopods as a structural synapomorphy.  The creation of this group brought together many of the sisterless taxa listed in Patterson (1999) and has been confirmed by several supergroup analyses (Nikolaev et al., 2004; Baldauf, 2003; and Keeling, 2004).  The supergroup is a work in progress, but presently is made up of a single kingdom Cercozoae. [Domain Eukarya]

For further information, go to the Evolution of the Eukaryotic Supertree.

TAXA PHOTOSYNTHESIS PSEUDOPODIA CELL COVERING FLAGELLA MINERALIZATION
CERCOMONADA NO FILOPODS OR AXOPODS NAKED BUT WITH TESTS OF SILICACEOUS SCALES, ETC. 2 HETERODYNAMIC SOME WITH SILICACEOUS INTERNAL SKELETON AND MINERALIZED  AXOPODS
CHLORARACHNIOPHYTA YES, CHLOROPLASTS FILOPODS JOINED IN RETICULATE WEB WITH OTHERS IN A COLONY NAKED; CYST UNKNOWN ORGANIC ZOOSPORES WITH SINGLE POSTERIOR FLAGELLUM NO
PHYTOMYXA NO PLASMODIAL INTRACELLULAR PARASITES NAKED; CYST ORGANIC (CHITIN?) 2 HETERODYNAMIC NO
GRANULORETICULOSA SOME WITH SYMBIONTS RETICULOPODS- ANASTOMOSING WEB NAKED GAMETES WITH 2 HETERODYNAMIC (?) CALCIUM CARBONATE INTERNAL TEST THAT IS PERFORATED
HAPLOSPORIDA NO PLASMODIAL INTRACELLULAR PARASITES NAKED; SPORE ORGANIC WITH A LID ? NO
RADIOLARIA SOME WITH SYMBIONTS AXOPODS NAKED ZOOSPORES WITH 2 HETERODYNAMIC FLAGELLA INTERNAL SKELETON OF STRONTIUM SULFATE, SILICA, OR ORGANIC ONLY

REFERENCES.

This page is maintained by Jack R. Holt: 04/22/2008