Thermoprotei

Rule 9b

A later homonym of a name formed under the nomenclatural codes listed in Principle 2 cannot be used.

Recommendation 9

To form new prokaryotic names, authors are advised as follows:

1. Names that are very long or difficult to pronounce should be avoided.
2. Names should differ by at least three characters from existing names of genera or species within the same genus.
3. Languages other than Latin should be avoided when Latin equivalents exist or can be constructed by combining Latin word elements. Exceptions include names derived from local items such as foods, drinks, geographic localities, and other names for which no Latin words exist.
4. Authors should not name organisms after themselves. If names are formed from personal names, they should contain only the name of one person. They may contain the untruncated family and/or first names.
5. All personal genus names should be feminine regardless of the gender identity of the person they commemorate.
6. Names should not be deliberately contentious or abusive of any person, race, religion, political belief, or ideology.
7. Names that include mnemonic cues are preferred because they promote learning and memory.

Rule 14

The name of a taxon above the rank of genus is a Latinized word. Names of families and orders are in the feminine gender, the plural number, and written with an initial capital letter. Names of classes and phyla are in the neuter gender, the plural number, and written with an initial capital letter.

Rule 15

The name of a family, order, class, or phylum is formed by the addition of the appropriate suffix to the stem of the type genus name (see Section 4). These suffixes are presented in Table 1.

Rule 15

The name of a family, order, class, or phylum is formed by the addition of the appropriate suffix to the stem of the type genus name (see Section 4). These suffixes are presented in Table 1.

Rule 16

Each named taxon must have a designated nomenclatural type. The nomenclatural type, referred to in the SeqCode as “type”, for a species or subspecies is the evidence for that taxon (DNA sequence, see Rule 18a) with which the name is permanently associated. For taxa above the rank of species, the type is one of the subordinate taxa, with which the name is permanently associated. Formation of names of the taxa above the level of genus is based on the names of the types, allowing tracing which biological entity is included in the taxon. The nomenclatural type is not necessarily the most typical or representative element of the taxon.

Types of the various taxonomic categories are presented in Table 2.

Rule 24a

Effective publication under the SeqCode means that the name and evidence for the taxon have been published in a peer-reviewed journal or book.