Overview
The axodines are a group of unicellular heterokont algae.
They include pedinellids, silicoflagellates, and Rhizochromulinales.1]
Other terms include "Actinochrysophyceae" and "Dictyochophyceae".[1]
Characteristics
They characteristically have a single emergent flagellum, which lacks the root structure found in related groups, and is extended into a wing-like form supported by an internal rod. They also have tentacles or axopods supported by triads of microtubules, arising from the surface of the nucleus.
Classification and history
Order Dictyochales
The most notab le group is the silicoflagellates, marine plankton that form siliceous skeletons and are well-known as fossils.
Order Pedinellales
Most other axodines form a group variously called the pedinellids or actinodines.
Order Rhizochromulinales
In addition to the silicoflagellates and actinodines, the marine amoeboid Rhizochromulina marina is included here based on the structure of its zoospores. It is considered closer to the latter group than the former.
ristically have a single emergent flagellum, which lacks the root structure found in related groups, and is extended into a wing-like form supported by an internal rod. They also have tentacles or axopods supported by triads of microtubules, arising from the surface of the nucleus.Classification and history
Order Dictyochales
The most notable group is the silicoflagellates, marine plankton that form siliceous skeletons and are well-known as fossils.
Order Pedinellales
Most other axodines form a group variously called the pedinellids or actinodines.
Order Rhizochromulinales
In addition to the silicoflagellates and actinodines, the marine amoeboid Rhizochromulina marina is included here based on the structure of its zoospores. It is considered closer to the latter group than the former.
References
- ^ a b Mikrjukov K.A., Patterson D.J. (2001) Taxonomy and Phylogeny of Heliozoa. III. Actinophryids. Acta Protozoologica 40: 3-25
Taxonomy
The Class Actinochrysophyceae is further organized into finer groupings including:
- Subclass (2): Abaxodinae · Silicophycidae
- Order (5): Actinophryida · Ciliophryida · Dictyochales · Pedinellales · Rhizochromulinales
- Species: ZipcodeZoo has pages for 334 species and subspecies in the Class Actinochrysophyceae.
Orders
Actinophryida
Ciliophryida
Dictyochales
Dictyochales (or Silicoflagellates) are a small group of unicellular heterokont algae, found in marine environments. [more]
Pedinellales
Rhizochromulinales
The axodines are a group of unicellular heterokont algae. [more]
More info about the Order Rhizochromulinales may be found here.
References
- ^ a b Mikrjukov K.A., Patterson D.J. (2001) Taxonomy and Phylogeny of Heliozoa. III. Actinophryids. Acta Protozoologica 40: 3-25
Sources
- The text on this page is licensed under the GNU Free Documentation License. It includes material from Wikipedia retrieved Wednesday, April 25, 2012.
- Photographs on this page are copyrighted by individual photographers, and individual copyrights apply.
- The technology underlying this page, including the controls behind Keep Exploring, is owned by the BayScience Foundation. All rights are reserved.