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Re: [dinosaur] Plateosaurus species



Jolo <gwj2013@yahoo.com> wrote:

> It's still possible engelhardti can go to its own genus, as Iguanodon 
> anglicus was once reassigned to its own genus "Therosaurus" because the type 
> species of Iguanodon was
> transferred to I. bernissartensis.

The genus _Therosaurus_ was erected (Fitzinger, 1840) before _I.
bernissartensis_ was named (Boulenger in Beneden, 1881).  _I.
bernissartensis_ was made the type species of _Iguanodon_ in 2000.
_Therosaurus_ was put forward by Fitzinger as an arbitrary replacement
name for _Iguanodon_, for no good reason (at least, none apparent to
me).

But the literature seems to use trossingensis for material once
assigned to engelhardti, which is concerning.
>
> Sent from my iPad
>
> On 3 Jun 2021, at 17:58, Mickey Mortimer <mickey_mortimer111@msn.com> wrote:
>
> I'm actually curious about this as well.  The ICZN designated trossingensis 
> the type species, but didn't explicitly grant it any priority over other 
> species names.  So sure there are the possibilities of viewing engelhardti as 
> indeterminate at the species level or above, or viewing it as a separate 
> diagnosable species than P. trossingensis.  But if someone does the latter, 
> are they allowed to create a new genus name for engelhardti like 
> 'Euplateosaurus' since Plateosaurus is based on trossingensis now?  Or, if 
> somebody thinks the species are synonymous, should they call the resulting 
> taxon Plateosaurus engelhardti because engelhardti still has priority?  It's 
> like how the type species of Tarbosaurus is T. efremovi, but if Tyrannosaurus 
> bataar is synonymous like most everyone thinks, it's called Tarbosaurus 
> bataar because that species was named first.
>
> Mickey Mortimer
>
> ________________________________
> From: dinosaur-l-request@mymaillists.usc.edu 
> <dinosaur-l-request@mymaillists.usc.edu> on behalf of Jose Lorenzo Del Mundo 
> <gwj2013@yahoo.com>
> Sent: Wednesday, June 2, 2021 6:42 AM
> To: dinosaur-l@usc.edu <dinosaur-l@usc.edu>
> Subject: [dinosaur] Plateosaurus species
>
> As you may know, in 2019 the ICZN changed the type species of Plateosaurus 
> from P. engelhardti to P. trossingensis, on the grounds that the former is 
> undiagnostic. Several papers published since then (e.g. Nau et al. 2020 and 
> Lallensack et al. 2021) have followed this, using trossingensis when 
> referring to material once considered to be from engelhardti. But what 
> happened to engelhardti? Can it still be viewed as a separate, albeit dubious 
> species of Plateosaurus, or has it been synonymized with P. trossingensis 
> (which is improper, as engelhardti has priority)? I'm confused. Thanks in 
> advance.