RHIZARIA

CERCOZOAPhylum ForaminiferaPhylum RadiozoaPhylum HeliozoaApolonio, Bacay, Sabellano, SanchezAB2B Feb. 2, 2015

RHIZARIAnumerous shapesshells / skeletonsProtozoan fossilsmitochondria with tubular cristae

FORAMINIFERAdelicate, finely granular or hyaline anastomosing reticulopodiaCalcium carbonate testmultichambered shellsbenthic

A foram viewed in HPO. Multichambered shell visible. No reticulopodia visible.

FORAMINIFERA

KINGDOM Chromista Subkingdom Harosa Infrakingdom Rhizaria PHYLUM Foraminifera CLASS Globothalamea ORDER Rotaliida

Ammonia beccarii

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Another foram specie viewed in HPO. Multichambered shell visible. No reticulopodia visible.

KINGDOM Chromista Subkingdom Harosa Infrakingdom Rhizaria PHYLUM Foraminifera CLASS Tubothalamea ORDER Miliolida

Peneroplis planatus

RADIOZOAfloating/sessile amoeboid protozoansactinopodia and delicate filopodia radiating from a spherical bodyaxopods with microtubular stereoplasmskeleton (if present) composed of silica or strontium sulfate

A specie of Phylum Radiozoa viewed under HPO.

RADIOZOA

KINGDOM Chromista Subkingdom Harosa Infrakingdom Rhizaria PHYLUM Radiozoa CLASS Polycystina ORDER Spumellaria

Carposphaera capillaceaskeleton (strontium sulfate)

ACANTHARIAfree-living marine micro-predators

A radiolarian, Acanthometra elasticum. Shown are the intracapsular zone, the vacuolated extracapsular zone, spines made of silica, and its axopodium.extracapsular zoneintracapsular zonespineaxopodium

POLYCYSTINEAskeleton composed of silica

An electron microscpy of a fossilized, ancient single cell organism of Radiolaria Polycystinea.

Source: flickr.com (Linnea Rundgren)

STICHOLONCHEAbilaterally symmetricalaxopods arranged in rowsaxopods for feeding

An illustration of Sticholonche sp.

Image from Mikrjukov et al. (2000)

HELIOZOAbody divided into distinct inner and outer regions, but not separated by any physical boundaryaxonemes have numerous microtubules arranged as hexagons or trianglesfloating organisms, freshwater habitats

A heliozoan, Actinosphaerium sp.

Image from Beck and Braithwaite.axopodiumectoplasm / cortical layernucleiendoplasm / medullary layerfood vacuolecontractile vacuole

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