Paradoxides brachyrhachis Linnarsson, 1883 versus Paradoxides mediterraneus Pompeckj, 1901: a problematic determination

@article{Dieslvarez2010ParadoxidesBL,
  title={Paradoxides brachyrhachis Linnarsson, 1883 versus Paradoxides mediterraneus Pompeckj, 1901: a problematic determination},
  author={Mar{\'i}a Eugenia Dies {\'A}lvarez and Adrian W. A. Rushton and Rodolfo Gozalo and Gian Luigi Pillola and Eladio Li{\~n}{\'a}n and Per Erik Ahlberg},
  journal={GFF},
  year={2010},
  volume={132},
  pages={104 - 95}
}
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. 

Intraspecific Variability in Paradoxidid Trilobites from the Purujosa Trilobite Assemblage (Middle Cambrian, Northeast Spain)

TLDR
Analysis based on a pooled sample of 500 specimens demonstrates that many of the characters that have been used to define these species show continuous variations, which suggests that the taxonomic classification of other paradoxidids may be oversplit.

Enrollment and thoracic morphology in paradoxidid trilobites from the Cambrian of the Czech Republic

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Eccaparadoxides is a geographically widely distributed trilobite genus that occurs in the middle part of the Cambrian System. However, the systematically important morphologic characteristics that

Taphonomy and Palaeoecology of multi-element skeletoninvertebrates: a genetic model for exceptional preservation

The aim of the research is to improve the understanding on the origin of fossil accumulations by investigating their taphonomic and sedimentological features and by using stratigraphic data and the

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