A Higher Level Classification of All Living Organisms.
Classification, or taxonomy, is a system of categorizing living things. There are seven divisions in the system: (1) Kingdom; (2) Phylum or Division; (3) Class; (4) Order; (5) Family; (6) Genus; (7) Species. Kingdom is the broadest division.
Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. However, it is not a legal authority for statutory or regulatory purposes. While every effort has been made to provide the most reliable and up-to-date information available, ultimate legal requirements with respect to species are contained in.
Global Biodiversity Information Facility. Free and Open Access to Biodiversity Data.
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They are covered in silicate scales and spines. In Synura, these are formed on the surface of the chloroplasts, two of which are usually present, but sometimes only one divided into two lobes is seen. The cells have two heterokont flagella, inserted parallel to one another at the anterior, whose ultrastructure is a distinguishing characteristic of the group.
These organisms were previously classified as a primitive subkingdom of the plant kingdom, the thallophytes thallophyte, common name for members of the Thallophyta (or Thallobionta), a taxonomic group in some archaic classification systems that comprised algae, fungi, and lichens. Click the link for more information.
Algae of Australia: Introduction cover (toc). This introductory volume includes essays on the history of research on Australian algae, their classification, fossil record, systematic relationships, ecology, biogeography and economic significance. Keys to the identification of the orders of algae are accompanied by an extensive bibliography.