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Re: Anchisaurus neotype petition to ICZN



Ben Creisler
bcreisler@gmail.com

It look as if this item  got missed  on DML last year, so, better late
than never, here's the official ICZN opinion designating a neotype for
Anchisaurus.


Opinion 2361 (Case 3561): Anchisaurus Marsh, 1885 (Dinosauria,
Sauropodomorpha): usage conserved by designation of a neotype for its
type species Megadactylus polyzelus Hitchcock, 1865. Bulletin of
Zoological Nomenclature 72(2): 176-177


http://iczn.org/node/40543

Date Published: 06/2015

Type of Article: Opinion

Keywords: Ammosaurus, Anchisaurus, Dinosauria, dinosaurs, Lower
Jurassic, M. polyzelus, Megadactylus, Nomenclature, northeastern
U.S.A., Sauropodomorpha, taxonomy

Abstract:

Under the plenary power the Commission conserved the usage of the name
Anchisaurus Marsh, 1885 (Lower Jurassic, Connecticut Valley,
northeastern U.S.A.) that is based on Megadactylus polyzelus
Hitchcock, 1865. The fragmentary and non-diagnostic holotype of M.
polyzelus has been replaced with a diagnostic neotype, an almost
complete skull and skeleton (YPM1883, holotype of A. colurus Marsh,
1891).

Ruling

(1) Under the plenary power the International Commission on Zoological
Nomenclature has set aside all previous type fixations for the name
Megadactylus polyzelus Hitchcock, 1865 and designated specimen YPM1883
in the Peabody Museum of Natural History of Yale University as the
neotype.

(2) The name Anchisaurus Marsh, 1885 (gender: masculine), type species
by monotypy Megadactylus polyzelus Hitchcock, 1865 is hereby placed on
the Official List of Generic Names in Zoology.

(3) The name polyzelus Hitchcock, 1856, as published in the binomen
Megadactylus polyzelus and as defined by the neotype designated in (1)
above (specific name of the type species of Megadactylus Hitchcock,
1865), is hereby placed on the Official List of Specific Names in
Zoology.

On Mon, Apr 2, 2012 at 3:40 PM, Ben Creisler <bcreisler@gmail.com> wrote:
> From: Ben Creisler
> bcreisler@gmail.com
>
>
> A new petition to the International Commission on Zoological
> Nomenclature in the new issue of the Bulletin of Zoological
> Nomenclature  :
>
>
> Galton, P.M. (2012)
> Case 3561 Anchisaurus Marsh, 1885 (Dinosauria, Sauropodomorpha):
> proposed conservation of usage by designation of a neotype for its
> type species Megadactylus polyzelus Hitchcock, 1865.
> Bulletin of Zoological Nomenclature 69 (1): 44-50
> http://iczn.org/content/case-3561-anchisaurus-marsh-1885-dinosauria-sauropodomorpha-proposed-conservation-usage-desi
>
>
>
> The purpose of this application, under Article 75.5 of the Code, is to
> conserve the usage of the name Anchisaurus Marsh, 1885 (Lower
> Jurassic, Connecticut Valley, northeastern U.S.A.) that is based on
> Megadactylus polyzelus Hitchcock, 1865. It is proposed to replace the
> fragmentary and non-diagnostic holotype of M. polyzelus with a
> diagnostic neotype, an almost complete skull and skeleton (YPM 1883,
> holotype of A. colurus Marsh, 1891). This specimen has formed the
> basis for the concept of Anchisaurus, the first basal sauropodomorph
> genus from the U.S.A. and still the best represented from there since
> it was illustrated by Marsh (1892, 1893), and of A. polyzelus since it
> was illustrated by Galton (1976). Anchisaurus is the basis for
> ANCHISAURIDAE Marsh, 1885, the first basal sauropodomorph family to be
> named, and for the Anchisauria Galton & Upchurch, 2004.
>
> Also in the new issue, comments on Stegosaurus petition:
>
> http://iczn.org/content/comment-stegosaurus-marsh-1877-dinosauria-ornithischia-proposed-replacement-type-species-ste