Paleonet: Priority question

Alan Kabat alankabat at
Fri Dec 1 00:33:27 UTC 2017

A century ago, some stodgy taxonomists applied the "page and line priority" rule!  

Fortunately, the ICZN now focuses on stability in determining the "precedence between simultaneously published names" per Article 24:

Recommendation 24A. Action of First Reviser. In acting as First Reviser in the meaning of this Article, an author should select the name, spelling or nomenclatural act that will best serve stability and universality of nomenclature. (link to ICZN)

--Alan Kabat


-----Original Message-----
From: Plotnick, Roy E <plotnick at>
To: 'PaleoNet at' <PaleoNet at>
Sent: Thu, Nov 30, 2017 6:47 pm
Subject: Paleonet: Priority question

Taxonomic question.  Two species are named in the same paper. You decide to synonymize them. Which name, if either, has priority? Thanks – Roy
Roy E. Plotnick
Department of Earth and Environmental Sciences
University of Illinois at Chicago
845 W. Taylor St.
Chicago, IL 60607

E-mail: plotnick at
office 2454 SES
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"The scientific celebrities, forgetting their molluscs and glacial periods, gossiped about art, while devoting themselves to oysters and ices with characteristic energy.." -Little Women, Louisa  May Alcott

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