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Razorbill

Alca torda Linnaeus, 1758

You can select up to 8 checklists to perform a comparison of taxonomic authorities for this taxon and related concepts:

You can also use one of the pre-defined group of taxonomic authorities below:

The table provided below compares authorities for this taxon and related concept. Names in red are those that differ from the name in the column located immediately to the left.
Species concept Howard and Moore 1st editionHoward and Moore 2nd editionHoward and Moore 3rd edition (as published)Howard and Moore 3rd edition (incl. corrigenda 8)Howard and Moore 4th edition (incl. corrigenda vol.1-2)
* Alca torda  
 
Alca torda
Razorbill
Alca torda
Razorbill
Alca torda
Razorbill
Alca torda
Razorbill
Alca torda torda  
 
 
 
Alca torda torda
 
Alca torda torda
 
Alca torda torda
 
Alca torda torda (torda)  
 
Alca torda torda
 
 
 
 
 
 
 
[Alca torda torda (pica)]  
 
Alca torda pica
 
 
 
 
 
 
 
Alca torda islandica  
 
Alca torda islandica
 
Alca torda islandica
 
Alca torda islandica
 
Alca torda islandica
 
Alca torda islandica (islandica)  
 
 
 
 
 
 
 
 
 
[Alca torda islandica (britannica)]  
 
 
 
 
 
 
 
 
 

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