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  • 1.
    Denk, Thomas
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Palaeoecological interpretation of the late Miocene landscapes and vegetation of northern Greece: a comment to Merceron et al., 2016 (Geobios, doi:10.1016/j.geobios.2016.01.004).2016Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 49, s. 135-146Artikel i tidskrift (Refereegranskat)
  • 2.
    Doguzhaeva, Larisa
    et al.
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Mutvei, Harry
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Connecting stripes: An organic skeletal structure in Sepia from Red Sea2012Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 45, s. 13-17Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The skeletal structure, herein termed ‘‘connecting stripes’’, is demonstrated in dried cuttlebones of Sepia (Acanthosepion) savignyi de Blainville from the Gulf of Aqaba, Red Sea, Eilat, Israel. This structure consists of segmented chitinous strip-like sheets covering the outside opening to the cuttlebone chambers. Scanning electron microscope images demonstrate that the connecting stripes are tightly attached to the neighbouring septa along the septal edges and do not continue from one chamber to the next. When broken, they leave band-like remnants along the attachment sites. The connecting stripes consist of fibrous, organic, possibly mainly chitinous, laminas. Chemical analysis using energy dispersive spectrometry shows that the connecting stripes contain C, O, Na, K but lack Ca and P. The connecting stripes show perceptible, usually barely visible micropores with diameter of ca. 0.1 mm; distances between the micropores are 0.2 to 0.3 mm. The connecting stripes in Sepia are similar to connecting rings in bactritoids and ammonoids in having a segmented structure and a non-mineralized, organic composition. The microporosity of connecting stripes observed in Sepia has been also recorded in three genera of Mesozoic ammonoids. The connecting stripes may serve as a transport route of the cameral liquid in and out of the chambers and are considered to be a homologue of the connecting rings in cephalopods with a fully developed siphonal tube.

  • 3. Li, Zhaoyu
    et al.
    Mörs, Thomas
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Dormice (Rodentia, Gliridae) from the Middle Miocene of Hambach 6C, Northwest Germany2023Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 78, s. 15-31Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Glirid dental material is described from the Middle Miocene channel fill of the Hambach open-cast lignite mine in northwestern Germany. The fauna Hambach 6C shows a high diversity with seven species in six genera: Glirudinus undosus, Muscardinus thaleri, Muscardinus sansaniensis, Miodyromys aegercii, Paraglirulus werenfelsi, Microdyromys koenigswaldi, and Paraglis astaracensis, which are characteristic taxa in Middle Miocene European localities. Regarding the faunal composition and high diversity, the Hambach 6C assemblage is closest to that of the MN 5 locality Schönenberg in southern Germany, but also shares many taxa with late Middle Miocene faunas. The species richness of glirids, combined with other vertebrate remains in Hambach 6C indicates a warm, humid forested environment during the Mid-Miocene Climate Optimum (MCO).

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  • 4. Pineker, Patrick
    et al.
    Mörs, Thomas
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Neocometes (Rodentia:Platacanthomyinae) from the early Miocene of Echzell, Germany2011Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728Artikel i tidskrift (Refereegranskat)
  • 5.
    Pole, Mike
    et al.
    Queensland Herbarium, Brisbane Botanic Gardens Mt Coot-tha, Mt Coot-tha Rd, Toowong QLD 4066, Australia.
    McLoughlin, Stephen
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    The first Cenozoic Equisetum from New Zealand2017Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 50, s. 259-265Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Equisetum is described for the first time from Cenozoic deposits of New Zealand. The fossils derive from two early to earliest middle Miocene assemblages in South Island, New Zealand. The fossils are ascribed tentatively to subgenus Equisetum based on their possession of whorled branch scars, but they cannot be assigned with confidence to a formal species. The decline of equisetaleans, otherwise unknown from the Cenozoic of the New Zealand-Australian-Antarctic domain, was possibly a consequence of severe environmental changes – particularly, abrupt shifts in the temperature and soil moisture regime – experienced by this region in the Neogene, coupled with competition from opportunistic angiosperms.

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  • 6. Turner, Alan
    et al.
    Antón, Mauricio
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Taxonomy and evolutionary patterns in the fossil Hyaenidae of Europe2008Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 41, s. 677-687Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We review the larger pattern of appearance of the Hyaenidae in Europe and outline their part in the turnover of the guild of larger Carnivora that occurs across the Miocene–Pliocene boundary. The earliest record of the family is in MN4, although the patchy nature of the earliest records makes it difficult to be certain about the continent of origin. There is a clear pattern of morphological evolution over that long timespan, from the earliest viverrid- and herpestid-like forms through dog-like and more cursorial taxa to the larger, bone-crunching animals of the later Miocene and the Pliocene–Pleistocene epochs. Miocene dog-like hyaenas may indicate that social hunting had emerged by that time, while the appearance of larger species means that hyaena-accumulated bone assemblages may potentially occur in any late Miocene to Pleistocene locality.

  • 7.
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    A new chimaeroid fish from the Cretaceous of Lebanon1986Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 19, s. 393-397Artikel i tidskrift (Refereegranskat)
  • 8. Yamaguchi, Tatsuhiko
    et al.
    Goedert, James L.
    Kiel, Steffen
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Marine ostracodes from Paleogene hydrocarbon seep deposits in Washington State, USA and their ecological structure2016Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 49, nr 5, s. 407-422Artikel i tidskrift (Refereegranskat)
  • 9.
    Yun, Hao
    et al.
    State Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an.
    Cui, Linhao
    State Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an.
    Li, Luoyang
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Liu, Wei
    State Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an.
    Zhang, Xingliang
    State Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an.
    Pyritized preservation of chancelloriids from the Cambrian Stage 3 ofSouth China and implications for biomineralization2021Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 69, s. 77-86Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The enigmatic Cambrian animal chancelloriids were discovered in a wide range of taphonomic settings; however, preservation of biomineralized sclerite microstructure was solely known from secondarily phosphatized skeletal remains. Here, we investigate a uniquely pyritized chancelloriid from the lowerCambrian Guojiaba Formation in southern Shaanxi Province, China, using a combination of advanced analytic techniques. Results of the energy dispersive spectroscopy (EDS), X-Ray Fluorescence (XRF), and Raman spectrum show that the sclerites and scleritomes are preserved as pyritized internal moulds witha calcitic outer layer. The outer layer enveloping the internal moulds likely represents the recrystallized counterpart of the original biomineralized sclerite wall. Distinctive fibrous microstructures are discovered in the sclerites, which echo the features seen in the phosphatized fossils of chancelloriids. The typical microstructure, along with the recrystallized calcite, corroborate the interpretation that chancelloriid sclerites were originally constructed by fibrous aragonite. The stability of the microstructure and mineral composition in both carbonate and siliciclastic backgrounds indicate that chancelloriids were adapted to exploit aragonitic fibres to build their skeletons regardless of the change of their living environments.

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  • 10. Zamora, Samuel
    et al.
    Lefebvre, Bertrand
    Hosgör, Izzet
    Franzén, Christina
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Nardin, Elise
    Fatka, Oldřich
    Álvaro, José Javier
    The Cambrian edrioasteroid Stromatocystites (Echinodermata): Systematics, palaeogeography, and palaeoecology.2015Ingår i: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 48, nr 5, s. 417-426Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Cambrian edrioasteroid Stromatocystites is reported and described from Spain, Sweden and Turkey. All previously known occurrences of the genus are critically reviewed, and S. flexibilis is reinterpreted as a junior synonym of S. pentangularis. Stromatocystites was biogeographically widespread and colonized different areas of Baltica, Gondwana (Arabian, eastern and western margins) and Laurentia (western Newfoundland). Stratigraphically, it ranges from Cambrian Series 2, Stage 4 to Cambrian Series 3, Drumian. Stromatocystites lived in quiet water environments with stabilized substrates. It was attached directly to the substrate by its aboral surface. As these environments were widespread throughout Baltica, Gondwana and Laurentia, availability of suitable substrates for larval settlement and oceanic palaeocurrents led to the successful development of Stromatocystites colonies.

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