Rudist ID help

[FranzBernhard]

Hello,

I would like to ask, if somebody has seen such rudist traverse sections somewhere else (first und second post). Compared to the other four, abundant species (third post, for comparison), these three types are rare in the St. Bartholomä-formation and these are all that I have. Both apical and adapical views of this rare ones are shown, if possible. Some of them I have already posted on TFF, but here they are all together.

They are all from the Campian St. Bartholomä-formation in Styria, Austria (Gosau-group, Eastern Alps).

The specimens labeled Vaccinites cf. sulcatus come very close to them I have seen in the literature.

The "names" Hippurites cf. nabresinensis and Hippurites cf. colliciatus are not much more than tags, I have not seen something similar in the literature yet.

Many thanks for your help and oppinions!
Franz Bernhard

[FranzBernhard]

[FranzBernhard]

[Tidgy's Dad]

Very unusual and beautiful specimens. 

[Quer]

Have you considered Vaccinites archiaci ?

 

Here https://www.researchgate.net/publication/290791741_Intraspecific_variability_in_Hippuritidae_in_the_southern_Pyrenees_Spain_taxonomic_implications you can explore for  campanian species in common with Aquitaine-Pyrenees basin.

 

[FranzBernhard]

On 29.11.2018 at 8:35 PM, Tidgy's Dad said:

Very unusual and beautiful specimens.

Thanks for your appreciation!

 

21 hours ago, Quer said:

Have you considered Vaccinites archiaci ?

Thanks for your help and the plate! I don´t have this paper, but I have just requested it.

 

Edit: You can the paper also download here:

http://www.dst.uniroma1.it/geologicaromana/Volumi/VOL 28/GR_28_119_161_Vicens.pdf

 

Yes, I have considered both species, and was leaning towards V. sulcatus. But you have provided new data, now it looks a little bit different. But still a difficult decision! If you only compare the topo- and syntype, V. archiaci is slightly in favor. If you compare the whole variation, V. sulcatus seems to come closer...

 

Edit: Oh, there is another very interesting rudist in this paper,

Hippuritella sulcatoides (Douvillé, 1892)

This comes very close to "my" H. cf. nabresinensis....

 

Thanks you very much for your help!

Franz Bernhard

[abyssunder]

The rudist fauna of the Styrian Basin needs a serious revision. There are not too many specialists in our time who can make that, but we have a gentleman who is member of TFF.

 

BTW, what is the actual rudist faunal list of the region?

[FranzBernhard]

@abyssunder, here it is, but only in german. The latest list with figures and descriptions is that of Kaumanns (1962). This list was last repeatedly printed in 2010(!) in a local journal.

 

But I think, the hippuritids of this area are already revised. My determinations are based on the work of Steuber (2001): Strontium isotope stratigraphy of Turonian–Campanian Gosau-type rudist formations in the Northern Calcareous and Central Alps (Austria and Germany). Cretaceous research, 22, 429-441. See excerpt (4. Middle Campanian, Kainach).

 

Rudists from Wietersdorf are figured in Sanders et al. (2004): Shallow-water limestone clasts in a Campanian deep-water debrite (Krappfeld, Central Alps, Austria):
implications for carbonate platform history. Annalen des Naturhistorischen Museums Wien, 106A, 139-165.

 

Btw, this is not the Styrian basin, but a Gosau basin... . Confusing, isn´t it?

 

Franz Bernhard

[abyssunder]

I know what you are referring to, and I know that the sediments are from the Upper Cretaceous, Gosau. In any case, including you consider that the information of the revisions you mentioned are sufficient for a precise ID, try contacting the authors. I'm sure they might help you. Maybe you can collaborate with them for a newer revision, regarding to the nice specimens you have.
You make a good work, BTW!

[FranzBernhard]

8 hours ago, abyssunder said:

try contacting the authors.

I have already thought about that, thanks!

8 hours ago, abyssunder said:

You make a good work, BTW!

Thanks!

Franz Bernhard

[HansTheLoser]

Franz, I'm almost sure that you know the Steuber database:

 

http://www.paleotax.de/rudists/intro.htm

 

At least you may find some literature. Unfortunately the data are not updated (the database is as Thomas told me).

[FranzBernhard]

Thanks, Hans!

Yes, I am using this database. Thats an incredible collection of data!

Btw, today I have downloaded the classic Douvillé rudist papers. Unfortunately, I do not speak french, but thats an unbelievable, gigantic work, inkl. many, many photographs (1890ies!).

Franz Bernhard