Systema Naturae 2000
- Reference Priority -

Describes the determination of the most recent reference of an entry in the main classification.

Priority Rules

  1. Acceptance
    1. High/Unknown
    2. Low
  2. Stability
    1. High
    2. Low
  3. Placement
    1. Original
    2. Indirect
    3. Uncertain
  4. Authority
    1. Authorative
    2. Scientific
    3. Non-scientific
  5. EntryType
    1. Official with description
    2. Official without description
    3. Semi-official
    4. Unofficial
    5. Reference
    6. Synonym
    7. Error
  6. Date of publication
    1. Most recent
    2. Earlier

Example: An original entry from a non-scientific reference (1.1.1.3.2.1) has priority over an indirect entry from an authorative reference (1.1.2.1.2.1).

Categories

Category Description
Acceptance The level of acceptance within the later publications. Acceptance for newly published references is unknown. Older references may be widely accepted or not.
Stability Stability of the main classification. E.g. classifications that deal with high level taxa only can cause instability of the main classification by introducing many entries of subtaxa with uncertain placement. Although they may reflect the most recent views, the more stable classification is preferred until more data becomes available.
Placement The position of the entry in the main classification with respect to the original reference.
Authority The authority of the entry.
EntryType The type of entry.
Date of publication The date of publication of the used reference.

Settings

The Authority of a reference has these settings:

Setting Description
Authorative The used reference is considered taxonomically authorative when it is:
- an original monograph or revision
- an original publication cited from another taxonomically authorative reference
Scientific The used reference is considered scientific when it is:
- authorative but not in the field of taxonomy
- cited from another scientific reference
- an extract from an authorative reference found in literature or on internet
Non-scientific The used reference is considered non-scientific when it is:
- not cited in the above categories, including popular books and classifications on the internet without proper references

The Authority of an entry has these settings:

Setting Description
Authorative The entry is considered taxonomically authorative when:
- the source is an authorative reference and the entry is official, with or without description
Scientific The entry is considered scientific when it is:
- the source is an authorative reference and the entry is not official
- the source is a scientific reference
Non-scientific The entry is considered non-scientific when it is:
- the source is a non-scientific reference

The Placement category has these settings:

Setting Description
Original The position of the entry in the main classification matches the position in the used reference exactly.
Indirect The position of the entry in the main classification is different from the position in the used reference. Placement occurs if:
- the taxon is the nominate type of the parent taxon
- the taxon belongs to the parent taxon, according to the vernacular name of the parent taxon, but no scientific name is associated to it by the used reference
Uncertain The position of the entry in the main classification is different from the position in the used reference.

The EntryType category has these settings:

Setting Description
Official entry with description Indicates that the scientific name in the used reference appeared:
- within scope of a valid level parent taxon, with a separate description
Official entry without description Indicates that the scientific name in the used reference appeared:
- within scope of a valid level parent taxon, without a separate description
Semi-official entry Indicates that the scientific name in the used reference appeared:
- within scope of a valid level parent taxon, but as an example only
- within scope of an invalid level parent taxon. E.g. a genus should not directly appear beneath an order without a family, unless explicitly stated otherwise.
Unofficial entry Indicates that the scientific name in the used reference appeared:
- out of scope of the parent taxon
- as text to a picture
Reference Indicates that the scientific name in the used reference appeared:
- in a cited reference only, i.e. not in the main text
Synonym Indicates that the scientific name in the used reference appeared:
- as synonym
- at an alternative position
Error Indicates that the scientific name in the used reference appeared:
- as a misspelling, misprint or misplacement. The valid name c.q. position should also appear in the same reference.

Document last updated 01 March 2002 21:31:15