Automated graptolite identification at high taxonomic resolution using residual networks [PDF]
iScienceSummary: Graptolites, fossils significant for evolutionary studies and shale gas exploration, are traditionally identified visually by taxonomists due to their intricate morphologies and preservation challenges.
Zhi-Bin Niu, Si-Yuan Jia, Hong-He Xu
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Rhabdopleurid epibionts from the Ordovician Fezouata Shale biota and the longevity of cross-phylum interactions [PDF]
Communications Biology, 2023 Evidence of interspecific interactions in the fossil record is rare but offers valuable insights into ancient ecologies. Exceptional fossiliferous sites can preserve complex ecological interactions involving non-biomineralized organisms, but most of ...
Karma Nanglu +3 more
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The southwesternmost record of late Silurian (Pridolian) early land plants of Gondwana [PDF]
Scientific ReportsThe Silurian–Devonian transition played a crucial role in the development of early terrestrial ecosystems due to the rapid diversification of early vascular plants.
Juan M. Drovandi +9 more
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Early Tremadocian graptolites from the Arivechi area, Sonora, northern Mexico [PDF]
Estonian Journal of Earth Sciences, 2023 Graptolites from the early Tremadocian Anisograptus matanensis Biozone are identified from east-central Sonora, northwestern Mexico, within a carbonate-shelf succession deposited on the southwestern continental shelf margin of Laurentia.
Dulce Raquel Reyes-Montoya +5 more
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New contributions to the Ordovician biostratigraphy of the Western Precordillera, Argentina [PDF]
Estonian Journal of Earth Sciences, 2023 Upper Ordovician graptolites and conodonts are recorded from the Yerba Loca Formation in two sections, in the El Toro and Las Viudas creeks, from the El Tigre Range in the Western Precordillera of San Juan Province, Argentina. A collection of graptolites
Fernando E. Lopez +3 more
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Upper Ordovician chronostratigraphic correlation between the Appalachian and Midcontinent basins [PDF]
Estonian Journal of Earth Sciences, 2023 Study of a subsurface core (named F688) from northern Indiana provides integrated data sets linking Katian chronostratigraphic records of the Appalachian and Midcontinent basins.
Cristiana J. P. Esteves +7 more
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Darriwilian (Middle Ordovician) graptolites from the northern margin of the Qaidam Basin (Qinghai, China) [PDF]
Estonian Journal of Earth Sciences, 2023 A restudy of the early Darriwilian graptolites from the Dameigou section in the Qaidam Basin provides some new information for graptolite biostratigraphy.
Liting Deng, Ming Li, Mo Huang
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Tremadocian (Ordovician) reclined graptolites from Baishan, North China [PDF]
Estonian Journal of Earth Sciences, 2023 The Erdaopuzi section in the Baishan area of Jilin Province, northeast China, contains abundant late Tremadoc graptolites. However, there are some taxonomic controversies regarding the characters of the hand specimens that are difficult to identify.
Ming Li +3 more
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Evolutionary history of the Gothograptus lineage of the Retiolitidae (Graptolithina) [PDF]
Estonian Journal of Earth Sciences, 2015 Evolutionary trends of the Gothograptus lineage (Graptolithina, Retiolitidae) from the lower Homerian to lower Ludfordian, Silurian are described. Gothograptids evolved towards simplification of the tubarium and decrease in the number of thecae.
Anna Kozłowska
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Biogeographic dynamics of graptolite species during the end-Ordovician mass extinction in South China [PDF]
Estonian Journal of Earth Sciences, 2023 Spatial and temporal analysis of geographical biodiversity dynamics and reconstruction of species distribution areas are essential for revealing the patterns of evolution of graptolites and their survival strategies during bio-events.
Qing Chen, Linna Zhang
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