Abgeschickt von Allart am 27 Februar, 2004 um 12:03:02
Antwort auf: Re: mystery trilobites von andreas am 23 Februar, 2004 um 17:51:14:
Hello Andreas,
I've looked up the genera in the recent list of trilobite genera provided by Jell & Adrain (2003) and Acidaspis, Isoprusia and Koneprusia are valid genera, and none is a synonym of another.
Smeenk (1983) reports a Leonaspis cf. hoernesi in the Devonian of the Cantabrian Mountains (N-Spain) but its lateral glabellar lobes are divided by a distinct furrow (groove), which is not seen in Lutke's drawing. He also reports one Koneprusia sp. with a similar occipital spine to my cranidium. Also, the median glabellar part of my cranidium is much more comparable to Koneprusia than to Leonaspis.
Allart
: : Hi Allart,
: i think,that there are not very much informations about the genus " Acidaspis,Isoprusia or Koneprusia". That is the reason,why i try to get more informations for that species; maybe Acidaspis is the former name for koneprusia,but i donīīt know . the coming weekend,there will appear on my Hp a new trilobite from gees,he could be interesting for you...
: bye
: Andreas
: : Hello Andreas, and thank you for that info.
: : This is really amazing that you tell me this! Let me explain: I have been a day in the field yesterday and returned this afternoon. I found in my mailbox an article that I had ordered some weeks ago, by Smeenk on Spanish Devonian trilobites and I found that the Koneprusia in it show remarkable resemblances with my cranidium. I found the lateral glabellar lobes much more resemblant with my cranidium than those of Leonaspis, as well as the shape and lateral progression of the median glabellar part. And now I find this message from you! :)
: : When I first picked it up in the field I was certain it was an Acidaspis because of the shape and occipital spine. Brigitte thought it may be a Leonaspis, and then Ben pointed towards Isoprusia. Basse did not know what it was. But it seems like the puzzle is slowly being solved now.
: : By the way: What about the Acidaspis bucco that is in Kowalski's article (Trilobieten aus dem Devon der Eifel, fig 2., p.57, 1990)? Is that still called Acidaspis?
: : Your article is coming your way on tuesday. Copying it took a bit longer than I had thought and because of the (horrible!) carnaval everything's closed tomorrow.
: : Best regards,
: : Allart
: : : : hi Allart.your cephalon bt090 seems to be a " koneprusia" Richter describes a comparable cranidium in 1919 under the nam Acidaspis bucco.from Auburg,gerolstein.in Basse 1 you find a picture from " Koneprusia" ? bucco,from a younger stratigraphic niveau ( border eifelium-givetium) . Nvertheless,the form of the cranidium and the back spine is so characteristic,that your specimen should belong to that group.your right,the form of the cranidium is more similiar to leonsapis as to other spiny trilobitesHello all,
: : : : I've added a page about a few undetermined trilobites on my website. It will be expanded in the future, but for now, have a look.
: : : : Allart