Comprehensive Description

Read full entry

Description of Actinophryidae

Circumscription: One of several groups of organisms previously placed together as the heliozoa; round bodies with radiating stiff arms (axopodia); cell surface naked, no flagellated stage known. With one or many nuclei; siliceous plates or other siliceous aggregates form one layer of an encysted state. Affinities probably with the pedinellids, a group of stramenopiles. Ultrastructural identity: Mitochondria with bleblike (tubular) cristae. Axopodia supported by axonemes with microtubules in double polygonal spiral and nucleating on a nucleus or amorphous material. Two types of extrusomes: one larger homogeneous and osmiophilic, the other smaller and more heterogeneous. Dictyosomes typically associated with nuclei. Mitosis with microtubules penetrating from the cytoplasm, nuclear envelope mostly fragments. Synapomorphy: Tubulocristate protists with double polygonal spiral arrangement of microtubules in axopodia.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)


Source: BioPedia

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!