Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Peter E. Marshall +2 more
wiley +3 more sources
Coupled exuviae of the Ordovician Ovalocephalus (Pliomeridae, Trilobita) in South China and its behavioral implications [PDF]
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
doaj +2 more sources
Trilobite expansion into estuarine environments during the Ordovician radiation [PDF]
Trilobites have traditionally been considered fully marine. Through the integration of ichnological, palaeobiological and sedimentological datasets within a sequence-stratigraphic and stratiÂgraphic palaeobiology framework, we challenge this assumption.
M. Gabriela Mángano +5 more
doaj +1 more source
Ontogenetic moulting behavior of the Cambrian oryctocephalid trilobite Arthricocephalites xinzhaiheensis [PDF]
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
doaj +2 more sources
A new middle Cambrian trilobite with a specialized cephalon from Shandong Province, North China [PDF]
Trilobites achieved their maximum generic diversity in the Cambrian, but the peak of morphological disparity of their cranidia occurred in the Middle to Late Ordovician. Early to middle Cambrian trilobites with a specialized cephalon are rare, especially
Zhixin Sun, Han Zeng, Fangchen Zhao
doaj +1 more source
Advances in the Lower Ordovician of the western Iberian Chain, NE Spain [PDF]
The western Iberian Chain of NE Spain represents a lateral prolongation of the West Asturian-Leonese Zone. As other proximal sectors fringing NW Gondwana, the chain comprises a conÂformable and continuous FurongianâTremadocian transition, comprising a
J. Javier Álvaro +1 more
doaj +1 more source
Trilobites with appendages from the Rust Formation of New York State were discovered in the 1870s and represent one of the earliest known cases of exceptional preservation of non-biomineralized tissues.
Sarah R. Losso +2 more
doaj +1 more source
On the lower boundary of the Floian Stage in Estonia [PDF]
The lower boundary of the Second Stage of the Lower Ordovician Series, the Floian Stage, is defined by the first appearance of the graptolite Tetragraptus approximatus.
Helje Pärnaste, Viive Viira
doaj +1 more source
Trilobites inhabited all environments of Paleozoic seas, ranging from estuaries to continental slopes, and were globally distributed. Although their functional morphology and phylogenetic relations are established by well-preserved body fossils, the ...
Daniel Sedorko +11 more
doaj +1 more source
The years 2022 marks the 95th anniversary of the foundation of the Geological Museum, the predecessor of the Department of Geology of the National Museum of Natural History NAS of Ukraine.
Galina Anfimova
doaj +1 more source

