Penard Labs

The Fascinating World of Amoebae
Thecofilosea Cavalier-Smith 2003, emend. Cavalier-Smith 2011
Ancestrally with robust organic extracellular theca; theca with perforations for cilia and for pseudopodia; ventral filopodia emerge from ventral groove.

1. Tectosia Cavalier-Smith 2012
Heterotrophic non-flagellates with single large nucleus and filopodia emerging from one or more apertures in a theca or central capsule; extrusomes absent.

1.1. Tectofilosida Cavalier-Smith 2012

1.1.1. Chlamydophryidae de Saedeleer 1934, emend. Meisterfeld 2002 (incertae sedis)
With a more or less flexible test that may be distorted by the contraction of the cell or by foreign material; some with attached foreign particles, scales, spines or spicules; division often longitudinal or by budding. Uni- or multinucleate; some species can fuse to form larger, multinucleate cells. Lecythium Hertwig & Lesser 1874
Test thin, flexible and homogenous; colorless and translucent; aperture terminal, elastic; large posterior nucleus. Plasma fills the test completely. Numerous filopodia, branching, delicate and not anastomosing.
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Lecythium hyalinum (Ehrenberg 1838) Hertwig and Lesser 1874
The arrow points to the aperture.

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Lecythium hyalinum

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Lecythium spinosum (Penard 1890) Hopkinson 1915

1.1.2. Diaphoropodon Archer 1869 (incertae sedis)
Test ovoid, clear, flexible with attached particles. With numerous spines (bristles). Numerous filopodia, branching, delicate and sometimes anastomosing.
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Diaphoropodon mobile Archer 1869

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Diaphoropodon archeri De Saedeleer 1934