PalZ

Rothausen, Vorsitzenden K.; den Fischer, Schriftführern R.; Förster, R.

doi: 10.1007/bf02989417pmid: N/A

Frydas, Dimitris

doi: 10.1007/bf02989418pmid: N/A

The fossil calcareous and siliceous phytoplankton occurring in the Neogene of the island of Crete — Greece — (South Aegean island arc), was studied using normal ligntmicroscopic techniques. By this method it was possible to identify 13 species of the silicoflagellates and 22 species of the diatoms, which are investigated in this work for their stratigraphical range. The nannoplankton assemblages along the locality from Tsikalaria belong to theDistephanus boliviensis and theDiscoaster tamalis zone (early Upper Pliocene).

Fauchald, Kristian; Stürmer, Wilhelm; Yochelson, Ellis L.

doi: 10.1007/bf02989422pmid: N/A

Five specimens ofSphenothallus have been observed in Early Devonian slates from West Germany which have been studied bv radiographs. This genus has been assumed by several authors to be a “worm tube” or that it may belong to the Conulata. Some individuals show soft parts extending from the aperture. All preserve a bilaterally symmetrical tentacular apparatus.Sphenothallus could be related to the Annelida, but cannot be placed in that phylum since no evidence of segmentation is preserved. In specimens from other localities,Sphenothallus has been observed to have a chitinophosphatic tube, unlike the calcareous tube of living tube-dwelling annelids. What can be observed of the apertural soft parts indicates a mode of life similar to that of members of the modern-day annelid order Sabellida.

Geys, Joris F.; Venlo, John Jagt

doi: 10.1007/bf02989425pmid: N/A

Four additional species of regular echinoids from the Maastricht type-area, brought to light by intensive collecting, are described. Three of these were never reported before from the Low Countries. Their taxonomic status is discussed.

Schultze, Hans-Peter; Kansas, Lawrence; Möller, HeIko

doi: 10.1007/bf02989426pmid: N/A

A rich vertebrate fauna is described from the Middle Muschelkalk (Anis, Triassic) north of Gottingen, West-Germany. Completely preserved juvenile fishes ofEosemionotus vogeli Fritsch 1906 occur besides teeth of selachians, scales and some bones of actinopterygians and actinistians and bones of nothosaurs. Genus and species ofEosemionotus vogeli is described and redefined. These findings and search in the literature demonstrate that a rich vertebrate fauna existed in the sea of the Middle Muschelkalk; the contrary is accepted generally.