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Rhaetian conodonts are reported for the first time from the Tatra Mts. Two conodont species: Misikella posthernsteini Kozur and Mock, 1974, and Misikella sp. A, found in the sub-tatric (Choc) Rhaetic cropping out at the foot of Siwiańskie Turnie, are described and figured. The stratigraphic position and value of these conodonts is discussed on the background of foraminifer zonal scheme.
Comparison of cuticular ultrastructure in Antarctidromia inflata Förster, 1985 from the Miocene Cape Melville Formation on King George Island, Antarctica, with that of the confamilial, extant Homolodromia paradoxa A. Milne Edwards, 1880 suggests that the more rigid carapace of the fossil form results from a relatively thicker, more strongly calcified exocuticle. Epicuticle, exocuticle, and endocuticle are all recognizable on the fossils; however, adherence of the epicuticle to the counterpart may result in misinterpretation of the fine sculpture on the carapace. Absence of dissolution features in the endocuticle confirm conclusions, based upon completeness of remains, that the specimens of Antarctidromia inflata represent corpses, not molts.
A new species of palinuran lobster, Glyphea reticulata, from the lowermost part of the Eocene La Meseta Formation on Seymour Island, Antarctica, represents one of the stratigraphically youngest species of Glyphea. The occurrence of the last vestiges of what was previously a cosmopolitan genus in a region dominated by Pacific Ocean faunal influences is significant because the sole extant species of the Glypheidae, Neoglyphea inopinata Forest & Saint Laurent, 1975, is known only from the west Pacific.
Trace fossils Lockeia siliquaria James, Ophiomorpha nodosa Lundgren, Para- taenidium seymourensis isp. n., Protovirgularia rugosa (Miller and Dyer) and Rhizo- corallium jenense Zenker have been described for the first time from the Eocene La Meseta Formation of Seymour (Marambio) Island, Antarctic Peninsula. Determinations of some trace fossils formerly described from this formation have been revised. The whole trace fossils association from the La Meseta Formation points to foreshore-offshore environment as indicated by presence of the Skolithos and Cruziana ichnofacies, and to at least temporal normal salinity.
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An assemblage of Lower Lias (Hettangian-?Sinemurian) ostracodes is reported for the first time from the Tatra Mts. Six ostracode species (including a new one Ogmoconchella? carpathica Błaszyk, sp. n.) are recognized in the basal clastics of the Kopieniec Formation (Fatricum). Their stratigraphic range corresponds to the foraminiferal Ophthalmidium lelschneri and Ophthalmidium walfordi Assemblage Zone (sensu Gaździcki 1982).
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From isolated scolecodonts three new species of jaw apparatuses of Jurassic polychaetes are reconstructed and described: Schistomeringos expectatus sp.n., Arabella diversimaxillata sp.n. and Notocirrus compositus sp.n. The reconstruction criteria are briefly discussed. The ultrastructures preserved on attachment surfaces of soft tissues of scolecodonts are described and shown to be very useful for the reconstruction of jaw apparatuses. Micromorphological comparison showed a striking similarity in structure between Jurassic and Recent jaws of the Schistomeringos Jumars.
Bryozoans from the Lower Permian Treskelodden and Wordiekammen formations of southern and central Spitsbergen respectively, Svalbard, have been studied. Twenty species are identified, including one new genus, Toulapora gen. nov., with Toulapora svalbardense as type species and one new species, Ascopora birkenmajeri sp. nov. The taxonomic composition is typical Lower Permian, with species in common with Timan−Pechora and the Urals (Russia) and Ellesmere Island (the Canadian Arctic). Growth habits reflect a moderately to deeper shelf environment.
Foraminifers, sponge spicules, conodonts, and holothurian sclerites are recognized in the Korytnica Limestones at Liptovská Osada (West Carpathians, Slovakia). Five new holothurian sclerite species are erected, namely Eocaudina liptovskaensis sp.n., Kuehnites slovakensis sp.n., Praecaudina mostleri sp.n., Theelia liptovskaensis sp.n., and Theelia trammeri sp.n. The Korytnica Limestones are assigned to the Lower Carnian (Cordevolian), basing upon the entire microfossil assemblage. The Korytnica Limestones are also demonstrated to be time equivalent to the Upper Cassian Beds of the Dolomites.
Siltstone and sandstone beds of the Mount Wawel Formation (Eocene) contain trace fossils interpreted as insect resting traces and arthropod trackways, the latest determined as Glaciichnium australis isp. nov. and cf. Pterichnus isp. Glaciichnium is included in a new ichnofamily Protichnidae, which embraces invertebrate trackways composed of straight central trail(s) and lateral tracks. The same deposits contain fragments of plant stems in growth position, delicate fern-like plant twigs and leaves of Nothofagus. Their deposition took place in very shallow but flowing water, probably in a marginal part of a lake, perhaps in a delta. The presence of mudcracks proves incidental exposure of the sediment. The trace fossils were produced by arthropods, especially insects and/or isopods, between episodes of deposition and were influenced by the water flow and subtle changes in substrate consistency. This resulted in several morphological variants of the traces. Glaciichnium australis is similar to those produced by some caddisflies (Trichoptera) in shallow puddles in the Tatra Mountains of Poland. The arthropod-dominated trace fossil assemblage is similar to the Glaciichnium ichnocoenosis, which is known from some Pleistocene lacustrine varve sediments of Europe. This fits well with the beginning of climatic cooling in Antarctica during the late Eocene. This also shows the recurrence of some ichnological features on both ends of the globe in similar palaeoenvironmental conditions and supports basics of the ichnofacies concept.
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