First record of the Ordovician fauna in Mila-Kuh, eastern Alborz, northern Iran [PDF]
Estonian Journal of Earth Sciences, 2015 Restudy of the Cambrian–Ordovician boundary beds, traditionally assigned to the Mila Formation Member 5 in Mila-Kuh, northern Iran, for the first time provides convincing evidence of the Early Ordovician (Tremadocian) age of the uppermost part of the ...
Mohammad-Reza Kebria-ee Zadeh +4 more
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The median eyes of trilobites [PDF]
Scientific Reports, 2023 AbstractArthropods typically possess two types of eyes—compound eyes, and the ocellar, so called 'median eyes'. Only trilobites, an important group of arthropods during the Palaeozoic, seem not to possess median eyes. While compound eyes are in focus of many investigations, median eyes are not as well considered.
Schoenemann, Brigitte +1 more
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Crawlers on the Seabed – The Famous Devonian Trilobites of Gerolstein [PDF]
Geoconservation Research, 2021 This paper introduces the Middle Devonian trilobites of Gerolstein, found on the famous trilobite fields of Gees and at the Auberg hill in Gerolstein.
Jens Koppka
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The oldest known digestive system consisting of both paired digestive glands and a crop from exceptionally preserved trilobites of the Guanshan Biota (Early Cambrian, China). [PDF]
PLoS ONE, 2017 The early Cambrian Guanshan biota of eastern Yunnan, China, contains exceptionally preserved animals and algae. Most diverse and abundant are the arthropods, of which there are at least 11 species of trilobites represented by numerous specimens.
Melanie J Hopkins +3 more
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The Sumatran “Trilobite Larva” [PDF]
Psyche: A Journal of Entomology, 1941 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Charles T. Brues
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Scientific Reports, 2021 Episodic low oxygenated conditions on the sea-floor are likely responsible for exceptional preservation of animal remains in the upper Amouslek Formation (lower Cambrian, Stage 3) on the northern slope of the western Anti-Atlas, Morocco.
Gerd Geyer, Ed Landing
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Discovery of trilobite trace fossils from the Early to Middle Cambrian, Tabas Block, Central Iran [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2017 Early to Middle Cambrian successions exposed at the Shirgesht area, Tabas Block of central Iran has yielded a high diversity and abundant ichnofossils with arthropod trackways. These trace fossils contain diverse ethological patterns, including furrowing
ئارام بایت گل +2 more
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Coupled exuviae of the Ordovician Ovalocephalus (Pliomeridae, Trilobita) in South China and its behavioral implications [PDF]
PeerJ, 2020 Ecdysis was a vital process during the lives of trilobites. In addition to preserving the morphological changes in trilobite ontogeny, the preservation of its action often captured interesting behavioral information.
Ruiwen Zong
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Ontogenetic moulting behavior of the Cambrian oryctocephalid trilobite Arthricocephalites xinzhaiheensis [PDF]
PeerJ, 2021 Moulting behaviors in trilobites are a crucial strategy during development. Previous studies have demonstrated inter-and intraspecific variability of moulting behavior in trilobites.
Yifan Wang +8 more
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