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FranciscoWelterSchultes
2008-10-09 03:17:16

We have difficulties with the documentation of dates for papers for which the true date of publication differs from the one given in the publication itself. In malacology some publication dates are only "known" to some specialists, they different dates do seem to have been published soemwhere, and the information gets lost when these specialists die. 
The Code should at least include a mandatory rule that a different date of publication from the one to be derived from internal evidence from the work itself must be published somewhere. But I would rather recommend to establish some kind of a database where information on different publication dates for works should be obligatorily contained. 

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FranciscoWelterSchultes
2010-07-15 11:07:21

Art. 21.1 should be modified along with corresponding passages in Art. 3.1.

Remove "Except as provided in Article 3". The names established in Clerck's "Svenska spindlar" should be cited with the year 1757, the correct year of that publication. There is no need to cite Clerck's spiders with an incorrect date.

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FranciscoWelterSchultes
2012-11-30 11:20:07

Art. 21.5 

This Article should contain a rule serving as a guide how to cite dates of names published in works issued in parts. This chapter is the place where this information is most likely to be searched by the taoxnomists who likes to know what to do.

21.5. Dates of work issued in parts. If parts of a work were published on different days, the date of publication of each part is to be separately determined. If publication of the data relating to a new nominal taxon or a nomenclatural act in such a work is interrupted and continued at a later date, the correct date of availability corresponds to the date when the requirements of availability have been met (Art. 10.1.1).

Example: In a work issued in parts FĂ©russac (1821) mentioned a new name Helix metaformis without description and with a reference to a figure on a plate that had not been issued at the date when the text was published (13 July 1821). The plate appeared several months later (21 Sep 1821), without a name printed on it. 21 Sep 1821 is the date when the name was made available. 

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