New <i>Orchestina</i> Simon, 1882 (Araneae: Oonopidae) from Cretaceous ambers of Spain and France: first spiders described using phase‐contrast X‐ray synchrotron microtomography

Saupe, Erin E.; Fuente, Ricardo Pérez de la; Selden, Paul A.; Delclós, X; Tafforeau, Paul; Soriano, Carmen

doi:10.1111/j.1475-4983.2011.01123.x

Cited by 20 publications

(14 citation statements)

References 36 publications

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“…Another way of achieving similar results is the application of propagation phase-contrast Xray synchrotron imaging, applied to fossil spiders in amber by Saupe et al (2012) (Fig. 14C-D).…”

Section: Ct and Synchrotron Scanningmentioning

confidence: 95%

Imaging techniques in the study of fossil spiders

Selden

Penney

2017

Earth-Science Reviews

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“…Another way of achieving similar results is the application of propagation phase-contrast Xray synchrotron imaging, applied to fossil spiders in amber by Saupe et al (2012) (Fig. 14C-D).…”

Section: Ct and Synchrotron Scanningmentioning

confidence: 95%

Imaging techniques in the study of fossil spiders

Selden

Penney

2017

Earth-Science Reviews

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“…Raw data on arachnid species numbers were drawn from the summary lists by Dunlop et al (2017) and Harms and Henderickx et al (2006) and Henderickx and Boone (2014) for pseudoscorpions, and Dunlop et al ( , 2012 for spiders and acariform mites respectively. Other authors have used the more powerful synchrotron radiation (SR-µCT) to study arachnids in amber, such as Heetoff et al (2009) for an oribatid mite in Dominican amber and Saupe et al (2012) for spiders from French and Spanish amber. As part of our review, we also wanted to explicitly test whether Bitterfeld amber inclusions are amenable to imaging using the synchroton, as this approach often yields very high quality sets of morphological characters directly comparable to modern species.…”

Section: Methodsmentioning

confidence: 99%

Arachnids in Bitterfeld amber: A unique fauna of fossils from the heart of Europe or simply old friends?

Dunlop¹,

Kotthoff²,

Hammel³

et al. 2018

EvolSyst

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Bitterfeld amber, sometimes referred to as Saxon or Saxonian amber, is a potentially significant but poorly known source of arthropod data for the Palaeogene of northern Europe. An important aspect is a long-standing controversy about the age of this amber: namely whether it is equivalent to, and perhaps merely a southerly extension of, the better-known Baltic amber, or whether it is a unique and geological younger deposit sampling a different fauna. Here, we briefly review the Bitterfeld arachnids with particular emphasis on how these data could be used to elucidate the age of this deposit. Five arachnid orders have been recorded from Bitterfeld amber: spiders (Araneae), acariform mites (Acariformes), parasitiform mites (Parasitiformes), harvestmen (Opiliones) and pseudoscorpions (Pseudoscorpiones). This is a lower diversity than Baltic amber, where scorpions (Scorpiones) and camel spiders (Solifugae) have also been recorded. Spiders are the most comprehensively studied group, with more than 75 described species. Other groups such as pseudoscorpions and mites appear to be very diverse, but are virtually undescribed. Morphological overlap is apparent in the arachnid fauna and 40 species are currently shared between Baltic and Bitterfeld amber whilst 50 species are unique to the Bitterfeld deposit. At the family level overlap is even higher, but in all groups Baltic amber appears more diverse than Bitterfeld. This overlap may be interpreted as evidence for temporal conspecifity of the Baltic and Bitterfeld ambers, albeit with the Bitterfeld and Baltic ambers possibly representing independent localities within a larger Eocene European amber area which also included the Rovno amber from the Ukraine. However, caution should be exercised because the taxonomic foundation for such assumptions is far from comprehensive, most of the material remains to be studied in detail using modern techniques of morphological reconstruction. There are further issues with date estimates because some arachnid groups show extraordinary morphological stasis over time, even at species level, which may bias the analyses available. Here, we review the available knowledge on Bitterfeld arachnids and discuss how a detailed assessment of this fauna, and other arthropod taxa, could be generated. Several natural history museums – including Hamburg and Berlin – as well as private collectors host major assemblages of Bitterfeld fossils which may help to clarify the debate about the age and provenance of the material, and the extent to which (morpho)-species were maintained both over geographical distances and potentially geological time.

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“…However, our understanding of the taxonomy and systematics of this spider family has remarkably increased within the past five years, as reflected in numerous contributions (e.g., Edward and Harvey, 2009;Platnick and Dupérré, 2009a, 2009b, 2010aBaehr et al, 2012;Baehr and Harvey, 2013;Grismado and Ramírez, 2013;Platnick et al, 2013Platnick et al, , 2014. The family currently contains 1545 extant species in 102 genera (World Spider Catalog, 2015), but also has an extensive fossil record compared to other spider groups (e.g., Penney, 2000;Saupe et al, 2012;summarized in Dunlop et al, 2015).…”

Section: Introductionmentioning

confidence: 97%