Results 21 to 30 of about 113 (70)
EVOLUTIONARY AND BIOGEOGRAPHIC PATTERNS OF TRILOBITES DURING THE END ORDOVICIAN MASS EXTINCTION EVENT [PDF]
, 2008 The end Ordovician mass extinction event is believed to have been caused by a geologically brief, sudden onset glacial period that interrupted a period of extreme greenhouse conditions.
Congreve, Curtis Raymond
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Early Devonian non-trilobite arthropods from the Iberian Chains (North East, Spain) [PDF]
Slightly sclerotised arthropods are described from shales of the Early Devonian age of the Axial Depression of the Cámaras river in Northeast Spain. The oldest records represent eurypterid fragments assigned to indeterminate Pterygotidae.
Bádenas, Beatriz +4 more
core +3 more sources
, 2018 8 pages : illustrations, map ; 26 cm.A large and almost complete dorsal exoskeleton of a homalonotid trilobite from the Middle Devonian of Colombia (Floresta Formation) is described and referred to Dipleura dekayi Green, 1832, confirming prior ...
Carvalho, Maria da Gloria Pires de.
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M.A.P.S. Digest, vol.10 no.2 (February 1987) [PDF]
, 1987 https://ir.uiowa.edu/midamericapaleo/1076/thumbnail ...
Mid-America Palentology Society
core +1 more source
Morfologia funcional e hábitos de vida de Trilobita da formaçao Ponta Grossa (Devoniano), Paraná, Brasil [PDF]
, 2004 Orientador: Robson Tadeu BolzonCoorientadora: Inês AzevedoMonografia (Bacharelado) - Universidade federal do Paraná. Setor de Ciencias Biológicas. Curso de Graduaçao em Ciencias BiológicasResumo : Neste trabalho foi desenvolvido um estudo da morfologia ...
Barros, Rodolfo Corrêa de
core +1 more source
A giant Rusophycus from the Arisaig Group (Siluro-Devonian) of Nova Scotia [PDF]
, 1986 A unique specimen of the trace fossil Rusophycus in the Moydart Formation (Ludlow) of the Siluro-Devonlan Arisaig Group of northeastern Nova Scotia la at least 35 cm long, 18 en wide and 8.5 cm deep.
Pickerill, R. K., Tansathien, W.
core +1 more source
Chelicerata, Merostomata [PDF]
, 1970 17 p. : ill. ; 24 cm.Includes bibliographical references (p. 17)."The functional morphology of burrowing was investigated in Limulus polyphemus with particular attention paid to the role played by the dorsal setae and prosomal shape.
Eldredge, Niles.
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Trilobites Calymenina do Devónico de Portugal – uma Revisão [PDF]
, 2019 As trilobites Calymenina do Devónico de Portugal são conhecidas desde o estudo pioneiro de Delgado (1908), ainda que à data muitas destas tenham sido atribuídas ao Silúrico terminal.
Caprichoso, Catarina
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, 2020 Los trilobites fueron artrópodos marinos paleozoicos, provistos de una cutícula dorsal mineralizada (exoesqueleto) y fosilizable, la que permitió que tengan gran representación en el registro fósil.
Tortello, Marcelo Franco +2 more
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Trilobites del Ordovícico Medio del sector meridional de la zona Centroibérica española. Parte III: Calymenina y Cheirurina. [PDF]
, 1989 Se estudian los trilobites Calymenina y Cheirurina representados en las "Capas con Tristani" (Llanvirn-Dobrotlviense) de la zona Centroibérica del Macizo Hespérico.
Rábano, Isabel
core +1 more source