Estudios Geologicos, 2009 Se describe por primera vez en detalle el enrollamiento de Conocoryphe heberti y se compara con el posible enrollamiento de Occatharia sdzuyi, ambas son especies de conocorífidos abundantes en el Cámbrico medio de la subprovincia Mediterránea.
J. Esteve
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The earliest cornulitid on the internal surface of the illaenid pygidium from the Middle Ordovician of Estonia [PDF]
Estonian Journal of Earth Sciences, 2017 The earliest cornulitid Cornulites sp. appears in the Darriwilian (Lasnamägi Regional Stage) of Estonia. Internal annulation is present in all Middle Ordovician cornulitids and could be a plesiomorphic character for the group.
Olev Vinn, Ursula Toom, Mare Isakar
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Geogaceta, 2022 Se presenta una nueva sección bioestratigrafica de la parte basal de la Formación Sueve. La nueva sección se suma a las nueve secciones descritas en estudios previos, relativos al sector septentrional del manto de Laviana.
Enrique Bernárdez +2 more
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Trilobite ‘pelotons’: possible hydrodynamic drag effects between leading and following trilobites in trilobite queues [PDF]
Palaeontology, 2017 AbstractEnergy saving mechanisms in nature allow following organisms to expend less energy than leaders. Queues, or ordered rows of individuals, may form when organisms exploit the available energy saving mechanism while travelling at near‐maximal sustainable metabolic capacities; compact clusters form when group members travel well below maximal ...
Hugh Trenchard +2 more
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Cruziana traces from the Late Silurian (Pridoli) carbonate shelf of Saaremaa, Estonia [PDF]
Estonian Journal of Earth Sciences, 2014 Late Pridoli Cruziana traces have recently been found in carbonate shelf sediments of the Ohesaare Formation on Saaremaa Island, Estonia. Cruziana isp. is interpreted here as a locomotory trace (repichnia) of an arthropod, possibly a trilobite.
Olev Vinn
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Permian trilobites and the applicability of the “living fossil” concept to extinct clades
Frontiers in Ecology and Evolution, 2023 Some taxa occupy our imaginations as “living fossils” because they were known from the fossil record before being discovered alive today. Other taxa are considered “living fossils” because modern relatives bear a strong morphological resemblance to ...
Melanie J. Hopkins +3 more
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Preliminary report on the Oldenburg “butter shale” in the Upper Ordovician (Katian; Richmondian) Waynesville Formation, USA [PDF]
Estonian Journal of Earth Sciences, 2015 The Cincinnatian Series (Upper Ordovician; upper Katian) of the Cincinnati Arch region, Ohio, Indiana and Kentucky) contains several bed packages informally referred to as “butter shales” or “trilobite shales”.
Christopher D. Aucoin +3 more
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Preparation and mounting of a sperm whale (Physeter macrocephalus Linnaeus, 1758) at the Natural History Museum in Oslo, Norway [PDF]
Natural History Collections and MuseomicsIn this report, we detail the process undertaken for preparing and mounting a sperm whale skeleton (Physeter macrocephalus Linnaeus, 1758) specimen for exhibition at the Natural History Museum of Oslo, University of Oslo, which was displayed in 2022.
Maximo A. Rojo +6 more
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Early Silurian (Llandovery) Trilobite fauna from [PDF]
Journal of Sciences, Islamic Republic of Iran, 2020 The aim of this study is to analyze the assemblage of trilobites in the Silurian sequences of Iran by exploring stratigraphic section of the Silurian Niur Formation (Asadli section).
Hamed Ameri
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A 390 million-year-old hyper-compound eye in Devonian phacopid trilobites
Scientific Reports, 2021 Trilobites, extinct arthropods that dominated the faunas of the Palaeozoic, since their appearance c 523 million years ago, were equipped with elaborate compound eyes. While most of them possessed apposition compound eyes (in trilobites called holochroal
B. Schoenemann +5 more
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