Search results for "Paradoxides"

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OnCallavia(Trilobita) from the Cambrian Series 2 of Iberia with systematic status of the genus

2021

Olenellid trilobites from the lower Cambrian of the Iberian Peninsula are very scarce and poorly studied, making them difficult to compare with defined species and to include in biostratigraphic and paleobiogeographic analyses. Based on newly collected specimens, we revise the species ‘Callavia? lotzei’ Richter and Richter, 1941 from the ‘Cumbres beds’ of Cumbres de San Bartolomé and the ‘Herrerías shale’ of Cañaveral de León, Sierra del Bujo, and Hinojales (Huelva, Spain), and ‘Paradoxides choffati’ Delgado, 1904 from the Vila Boim Formation of Elvas (Portugal). The new material indicates that Callavia? lotzei is a junior synonym of ‘P. choffati.’ The Iberian species are here assigned to C…

010506 paleontologybiologyPaleontologyBiozoneCambrian Stage 4010502 geochemistry & geophysicsbiology.organism_classification01 natural sciencesCambrian Stage 3GondwanaPaleontologyGeographyParadoxidesCambrian Series 2Callavia0105 earth and related environmental sciencesOlenelloideaJournal of Paleontology
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ParadoxidesbrachyrhachisLinnarsson, 1883 versusParadoxidesmediterraneusPompeckj, 1901: a problematic determination

2010

A revision of paradoxidid trilobites reveals that previous identifications of specimens from Sardinia and Spain as the Nordic trilobite species Paradoxides brachyrhachis Linnarsson, 1883, are mistaken. The southern species, occurring also in France, is here referred to Eccaparadoxides mediterraneus (Pompeckj, 1901). Main differences are seen in the preocular field, pleural furrow and pygidium. The species P. brachyrhachis is referred with question to the genus Mawddachites Fletcher 2007.

PaleontologyGeographybiologyGenusPaleontologyParadoxidesGeologybiology.organism_classificationTrilobitePygidiumGFF
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