Results 41 to 50 of about 900 (192)

On the Damesellidae (Trilobita) in Eastern Asia.

open access: bronzeProceedings of the Japan Academy, Series B, 1987
Teiichi KOBAYASHI
openaire   +3 more sources

Vatesus trilobita

open access: yes, 2013
Vatesus trilobita (Wasmann 1894: 211) Distribution. Brazil, Paraguay. Brazilian Biome. Atlantic forest. Locality records. ESPÍRITO SANTO: Rio Itabapoana Wasmann 1913: 377. Santa Teresa Borgmeier 1961: 203. Without specific locality Bernhauer and Schubert 1916: 444; Borgmeier 1949: 107; Wasmann 1913: 378.
Asenjo, Angélico   +11 more
openaire   +1 more source

Shifting spaces: Which disparity or dissimilarity measurement best summarize occupancy in multidimensional spaces?

open access: yesEcology and Evolution, Volume 10, Issue 14, Page 7261-7275, July 2020., 2020
Different measurements of multidimensional space occupancy can give different results and are affected by the multidimensional space properties and biological question. This paper provides a guideline of what different measurements are capturing and in which context they can be useful for answering biological questions.
Thomas Guillerme   +3 more
wiley   +1 more source

Sequence of post-moult exoskeleton hardening preserved in a trilobite mass moult assemblage from the Lower Ordovician Fezouata Konservat-Lagerstätte, Morocco [PDF]

open access: yesActa Palaeontologica Polonica, 2019
Euarthropods have a tough exoskeleton that provides crucial protection from predation and parasitism. However, this is restrictive to growth and must be periodically moulted.
Harriet B. Drage   +3 more
doaj   +1 more source

Upper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China [PDF]

open access: yesEstonian Journal of Earth Sciences, 2014
Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and corynexochid
Jan Bergström†   +3 more
doaj   +1 more source

Biostratigraphy and correlation of the Cambrian Series 2 (Stage 4) to Miaolingian (Wuliuan) Thorntonia Limestone, south‐eastern Georgina Basin (Queensland, Australia)

open access: yesPapers in Palaeontology, Volume 11, Issue 5, September/October 2025.
Abstract The Australian Cambrian stratigraphic record is one of the most complete for any continent. However, there is a general division, with older Cambrian rocks in South Australia (predominantly Terreneuvian, Stage 2 to Miaolingian, Wuliuan) and younger rocks in northern Australia (mostly latest Series 2, Stage 4 and younger), with minimal ...
Marissa J. Betts   +5 more
wiley   +1 more source

The evolutionary history of Coleoptera (Insecta) in the late Palaeozoic and the Mesozoic

open access: yesSystematic Entomology, Volume 49, Issue 3, Page 355-388, July 2024.
Structural transformations of the elytra and abdomen played a major role in the early beetle evolution in the Permian. Polyphaga appear late in the fossil record, with only a few fossils of Elateriformia in the Late Triassic. Several factors were involved in the enormous diversification of beetles in the Cretaceous but evolutionary interactions with ...
Rolf G. Beutel   +6 more
wiley   +1 more source

Abnormal trilobites from the Silurian and Devonian of Europe

open access: yesActa Palaeontologica Polonica
Malformed trilobites have been documented in deposits ranging from the Cambrian to the Permian. Continued examination of novel malformed specimens provides insight into how trilobites recovered from injuries, experienced genetic abnormalities, and ...
Russell D.C. Bicknell   +3 more
doaj   +1 more source

Distribution of the order Proetida (Trilobita) in Baltoscandian Ordovician strata [PDF]

open access: yesEstonian Journal of Earth Sciences, 2009
The trilobite order Proetida forms a minor but important faunal element within the Ordovician strata of Baltoscandia. This review follows the current systematic, taxonomic, and stratigraphical usage and discusses the distribution of these trilobites ...
Pärnaste, Helje   +2 more
doaj  

Three-dimensionally preserved appendages of the early Cambrian trilobite Yunnanocephalus yunnanensis [PDF]

open access: yesPeerJ
Advances in micro-computed tomography have brought new insights into the non-biomineralized three-dimensional morphologies of various euarthropods from the Chengjiang biota.
Luis Collantes   +5 more
doaj   +2 more sources

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