David, et al.,

I've usually used Tracey, S. A., Todd, J. A., and Erwin, D. H. 1993. Mollusca: Gastropoda. In: The Fossil Record
2, M. J. Benton, ed. Chapman and Hall, London, pp. 131–167. Is there a more recent or better reference?

Alan

On Mon, 9 Dec 2013, David Campbell wrote:

> Can you give more information on the Havlicek and Vanek, 1960 reference?  In general, more recent study has concluded that earlier
> records of neogastropods are due to erroneous assignment of Paleozoic forms, but I'm not quickly finding the details on that record.Â
> I know that there are also age range errors for mollusks out there due to homonyms and misassigned layers (the record of
> Carboniferous physids, ?ellobids (Zaptychius) and ampullarids from Walcott, 1883 is actually Cretaceous).Â
>
>
> On Mon, Dec 9, 2013 at 9:02 AM, David Osca Ferriol <[log in to unmask]> wrote:
>       Hello everyone,
>       first of all, I’m sorry about my english.
>       I’m looking for a fossil data for the beginning of Neogastropods. I have been looking for it in many papers and web pages
>       and the earliest I found was reading Ponder and Linberg, 2008 (Chapter 13) where it´s talked about a possible late
>       triassic maturifusid reported by Nützel and Erwin (2004) or Paleozoic (Cox, 1960). But in the fossilworks web page, there
>       is one data from ordovician of  Czech Republic ( Havlicek and Vanek, 1960). Do you Know if there is any problem with this
>       Ordovician fossil data or why it´s not considered in Ponder and Lindber, 2008?
>       I´d like to know if the origin of Neogastropods was around 200 My or 450 My.
>
>       Thank you in advanced for your help and, again, sorry about my english.
>
>       Best regards,
>
>       David Osca
>
>       --Â
> David Osca Ferriol
> Dpto. Biodiversidad y Biología EvolutivaMuseo Nacional de Ciencias Naturales - CSIC                             Â
> José Gutiérrez Abascal 2, 28006 MADRID
> Tel. (+34) 91 411 13 28 (ext. 1129)
> Fax. (+34) 91 564 50 78
> [log in to unmask]
> [log in to unmask]
>
>
>
>
> --
> Dr. David Campbell
> Assistant Professor, Geology
> Department of Natural Sciences
> Box 7270
> Gardner-Webb University
> Boiling Springs NC 28017
>
>