How many species of fossil arachnids are there

@inproceedings{Dunlop2008HowMS,
  title={How many species of fossil arachnids are there},
  author={Jason A. Dunlop and David Norman Penney and Odd Erik Tetlie and Lyall I. Anderson},
  year={2008}
}
Abstract The species-level diversity of fossil Chelicerata is summarized for each order. 1952 valid species of fossil chelicerates are currently recognized, of which 1593 are arachnids. In order of abundance they are: Araneae (979 fossil species), Actinotrichida (283), Eurypterida (241), Scorpiones (111), Xiphosura (96), Trigonotarbida (71), Pseudoscorpiones (38), Phalangiotarbida (30), Opiliones (25), Ricinulei (15), and Anactinotrichida (11). Other groups are represented by ten fossil species… 

Geological history and phylogeny of Chelicerata.

  • J. Dunlop
  • Geology, Biology
    Arthropod structure & development
  • 2010

Exploring the evolution and terrestrialization of scorpions (Arachnida: Scorpiones) with rocks and clocks

TLDR
The results reveal a window of divergence from 335 to 266 Mya for the scorpion crown group, consistent with a Pangean origin of crown scorpions inferred from the biogeographical distribution of the extant fauna.

The Origin of Mites: Fossil History and Relationships

Mites are members of the arthropod subphylum Chelicerata, a group with a long fossil history of about 500 million years (Dunlop 2010) (Fig. 2.1). The earliest chelicerate fossils are known from the

A new Devonian harvestman from the Rhynie chert (Arachnida: Opiliones)

With over 6,600 described species, harvestmen represent a morphologically and ecologically diverse group of arachnids with a cosmopolitan distribution. Although members of the order Opiliones are

About the enigmatic presence of the genus Scorpio Linnaeus, 1758 in Congo with the description of a new species from Niger (Scorpiones, Scorpionidae)

TLDR
The enigmatic presence of the genus Scorpio in Congo has been tentatively clarified, and this record is attributed to mislabelling.

Taxonomy of the thelyphonid genus Typopeltis Pocock, 1894, including homology proposals for the male gonopod structures (Arachnida, Thelyphonida, Typopeltinae)

TLDR
A new species of Typopeltis from Vietnam is described and a new description for the male of T.laurentianussp.guangxiensis is provided, characterized by the unique patellar apophysis that presents a smooth texture and no spines.

Nomenclatural Notes on Fossil Spiders

The fossil spider genus Protolycosa Gourret, 1887 from Aix-en-Provence, France is a junior homonym of Protolycosa Römer, 1866 from the Coal Measures of Silesia, Poland and is replaced here with

The ontogeny of the 300 million year old xiphosuran Euproops danae (Euchelicerata) and implications for resolving the Euproops species complex

TLDR
Part of the post-embryonic ontogeny of the 300 million year old xiphosuran Euproops danae (Xiphosura sensu stricto, Euchelicerata), from the Mazon Creek Lagerstätte (Upper Carboniferous), USA is described.

New Fossil Scorpion from the Chiapas Amber Lagerstätte

TLDR
A new species of scorpion is described based on a rare entire adult male preserved in a cloudy amber from Miocene rocks in the Chiapas Highlands, south of Mexico, adding to the knowledge of New World scorpions from the Miocene that are rarely found trapped in amber.

Neoichnology of the Burrowing Spiders Gorgyrella inermis (Araneae: Mygalomorphae) and Hogna lenta (Araneae: Araneomorphae)

  • J. Hils
  • Environmental Science, Geography
  • 2014
TLDR
The morphology of burrows produced by the mygalomorph spider Gorgyrella inermis and the araneomorph spider Hogna lenta are examined and changes in sediment density and sediment moisture did not result in statistically significant changes in burrows.

References

SHOWING 1-10 OF 69 REFERENCES

THE NEGLECTED COUSINS: WHAT DO WE KNOW ABOUT THE SMALLER ARACHNID ORDERS?

Abstract An overview of the systematics of smaller arachnid orders (Opilioacariformes, Ricinulei, Palpigradi, Uropygi, Amblypygi, Schizomida, Solifugae and Pseudoscorpiones) is provided, along with

A redescription of some poorly known Rotliegend arachnids from the Lower Permian (Asselian) of the Ilfeld and Thuringian Forest Basins, Germany

Two poorly known trigonotarbids (Arachnida: Trigonotarbida),Eophrynus schärftScharf, 1924 andEophrynus ilfeldicusScharf, 1924 from the Lower Permian (Asselian) Ilfeld Basin in the Harz Region of

Geralinura Carbonaria (Arachnida; Uropygi) from Mazon Creek, Illinois, USA, and the Origin of Subchelate Pedipalps in Whip Scorpions

TLDR
The morphology of the pedipalps is more like those of some modern amblypygids, being spiniferous and non-chelate, suggesting the subchelate palps found in all Recent whip scorpions is an apomorphy not yet incorporated into the bodyplan of G. carbonaria.

CHELICERATE ARTHROPODS, INCLUDING THE OLDEST PHALANGIOTARBID ARACHNID, FROM THE EARLY DEVONIAN (SIEGENIAN) OF THE RHENISH MASSIF, GERMANY

TLDR
The chasmataspidid closely resembles Diploaspis casteri from the Emsian assemblage of Alken an der Mosel, but is readily discernible as a new species, D. muelleri, by a strong tuberculation of its dorsal integument.

The first fossil opilioacariform mite (Acari: Opilioacariformes) and the first Baltic amber camel spider (Solifugae)

ABSTRACT The first fossil opilioacariform mite (Acari: Opilioacariformes), Paracarus pristinus sp. n., is described from Baltic amber (Tertiary: Eocene). This well-preserved inclusion has six eyes

AN ORIBATID MITE (ARACHNIDA: ACARI) FROM THE OXFORD CLAY (JURASSIC: UPPER CALLOVIAN) OF SOUTH CAVE STATION QUARRY, YORKSHIRE, UK

Abstract:  A single specimen of a new species of oribatid mite belonging to the genus Jureremus Krivolutsky, in Krivolutsky and Krassilov 1977 , previously described from the Upper Jurassic of the

Catalogue of the Smaller Arachnid Orders of the World: Amblypygi, Uropygi, Schizomida, Palpigradi, Ricinulei and Solifugae

TLDR
This authoritative catalogue will greatly assist readers in finding the correct taxonomic name for any given family, genus or species within each of the six arachnid orders treated, enabling readers to access the worldwide literature for these smaller orders.

A NEW SEA SPIDER (ARTHROPODA: PYCNOGONIDA) WITH A FLAGELLIFORM TELSON FROM THE LOWER DEVONIAN HUNSRÜCK SLATE, GERMANY

TLDR
This new material shows that at least two fossil pycnogonids retained a telson, albeit with very different morphologies, and further supports the idea that a greater diversity of body plans existed among the Palaeozoic pyCNogonid taxa.

THE TRIGONOTARBID ARACHNID ANTHRACOMARTUS VOELKELIANUS (ANTHRACOMARTIDAE)

TLDR
One of Karsch's figured Berlin specimens is regarded here as the holotype of A. voelkelianus, but his other figured fossil is evidently not conspecific and is tentatively referred here to Trigonotarbus sp.

Summary of a revision of New York State Ordovician eurypterids: implications for eurypterid palaeoecology, diversity and evolution

  • V. P. Tollerton
  • Environmental Science, Geography
    Transactions of the Royal Society of Edinburgh: Earth Sciences
  • 2003
ABSTRACT The record of Ordovician Eurypterida from New York State, USA, is shown to be largely false. Twenty-nine species in 17 genera are here recognised as pseudofossils, reducing by more than 75%
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