45 research outputs found
Viewing temporal trends of biotic interactions in the light of spatial variation: parasite prevalence in modern northern Adriatic bivalves.
Middle Miocene conoidean gastropods from western Ukraine (Paratethys): Integrative taxonomy, palaeoclimatogical and palaeobiogeographical implications
The late Badenian (early Serravallian) conoideans from the Pidhirtsi Beds of western Ukraine (central Paratethys) have
been investigated by means of a comprehensive and easy-to-perform morphometric approach, allowing the characterisation
of eleven species, of which seven are new to science: Mangelia angulicosta sp. nov., M. larga sp. nov., M.
pseudorugulosa sp. nov., M. odovychenae sp. nov., Bela varovtsiana sp. nov., Bela? robusta sp. nov., Pyrgocythara
turrispiralata sp. nov. Additionally we also identified Raphitoma cf. R. ringicula, Andonia sp. aff. A. transsylvanica,
Teretia cf. T. turritelloides, and Haedropleura sp. aff. H. septangularis. The relative high number of new species documented,
relative to the total previously known from this stratigraphic interval, is interpreted as resulting mainly from
combined methodological (dearth of taxonomic studies on Ukrainian conoideans) and environmental (high degree of
habitat fragmentation in reef setting) factors. The conoideans documented herein add important information regarding
palaeoclimaticalogical and palaeobiogeographical interpretations of the Serravallian Paratethys. The conoideans display
strong affinity at the species level and complete overlap at the genus level with Neogene Proto-Mediterranean−Atlantic
conoideans, thereby challenging the interpretation of late Badenian Paratethyan macrofaunal assemblage endemism. The
lack of typical warm-water indicators (e.g., Conidae, Clavatulidae, or Pseudomelatomidae) within the studied material
supports the interpretation that the fauna thrived during the late phase and/or soon after the Middle Miocene Climatic
Transition (14.2−13.8 Ma)
Molecular systematics and biogeographic history of the African climbing-mouse complex (Dendromus)
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