Microconchid remains were recognized from the Zacler Beds (Westphalian) of the Nowa Ruda area in Lower Silesia. They were tentatively determined as ?Microconchus sp. They have planispirally coiled tubes ranging in diameter from 0.9 to 2.5 mm. Some of the specimens are juveniles, while the rest are possibly mature. Well-visible ornamentation in the form of transverse thicker ribs and thinner longitudinal striae are present on the tube exterior of some well-preserved specimens. Microconchids occur on the surface of the leaf of the seed fern species Karinopteris daviesii.
keywords in English:
Microconchida, Spirorbis, Microconchus, Karinopteris daviesii, Upper Carboniferous, Nowa Ruda, Poland
affiliation:
Wydział Biologii i Nauk o Ziemi : Instytut Botaniki
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