Paleonet: Trilobite authorities questions

Roy Plotnick plotnick at
Tue May 12 14:28:21 UTC 2009

Usually the "go to" place would be the Paleobiology Database.  It does 
have some information that you are looking for, but lacks authority data 
for most of the trilobite species.  - Roy

K P wrote:
> Can someone help me with trilobite authorities and names?  I'm okay 
> with extant plants, it seems, but fossil animals are a bit trying. 
> I'm looking at an assortment of trilobites on the SEM and have a 
> handful of trilobite taxonomy questions  concerning authorities and 
> names and was hoping there would be useful answers from 
> Paleonetters--maybe answer off list, unless there's some current 
> interesting debate about a particular classification.
> Is there a specific resource for finding zoological authorities and 
> dates for fossils--there is an on-line paleontology data base but it 
> is not set up to give authorities like IPNI an Algae Base, the ones 
> I'm used to using?
> 1.  Should I use Redlichiida as the order or Ollenelida (for 
> /Olenellus /and /Esmeraldina///Holmia/)?
> 2.  Which name is correct, /Esmeraldina rowei///Holmia rowei/?  Author 
> and date?
> /
> 3.  //Peronopsis interstricta /- author and date?
> 4.  O/gyginus cordenis/ - author and date?
> 5.  P/hacops crassituberculata/ or /Phacops rana crassituberculata/?  
> Author and date?
> 6.  /Coronocephalus jastrowi/ - Author and date?
> 7.  /Ceraurus pleurexanthemus /- Author and date?
> All of these are fairly common trilobites, except maybe the last, as 
> I've looked at it from only one locality, although the authority and 
> date are probably in my Walcott Rust Quarry references for that one.  
> I thought the authorities would be easy to find.
> Also, I have a small handful of Utah trilobites (Cambrian) without any 
> genus attached to them.  They are common as dirt, as I've seen them 
> all of my life.  Can anyone identify the genus from an image?  I don't 
> think I can send an attachment via Paleonet, so I haven't, but I will 
> send a file to anyone who can help.  I promise if you know North 
> American Cambrian trilobites I will be asking you the equivalent of 
> identifying a daisy, and I only need the information at that level. 
> Thanks for any help, Kleo
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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

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