Calcitronidae

Calcitronidae; Temporal range: Pliocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Clade:	Thelyphonida
Family:	†Calcitronidae; Petrunkevitch, 1945

The family Calcitronidae is an extinct group of arachnids. Its two monotypic genera are only known from Pliocene deposits of calcite in Arizona. The family has been placed in the order Schizomida, but a review of the order concluded that "the fossil taxa ... are so poorly known that final placement must await further study and possibly new material", and they are not listed in the order in a 2016 catalog of fossil arachnids.

References

↑ "BioLib - Calcitronidae". BioLib. Retrieved 23 May 2012.
↑ Rowland, J. Mark (1972). "Revision of the Schizomida (Arachnida)". Journal of the New York Entomological Society. 80 (4): 195–204. JSTOR 25008826.
↑ Reddell, J.R. & Cokendolpher, J. C. (1995). Catalogue, bibliography, and generic revision of the order Schizomida (Arachnida) (PDF). Speleological Monographs 4. Texas Memorial Museum. Archived from the original (PDF) on 2016-04-11. Retrieved 2016-03-30.
↑ Dunlop, J.A.; Penney, D. & Jekel, D. (2016). "A summary list of fossil spiders and their relatives, version 16.5" (PDF). World Spider Catalog. Natural History Museum Bern. Retrieved 2016-03-30.

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[1] "BioLib - Calcitronidae". BioLib. Retrieved 23 May 2012.

[2] Rowland, J. Mark (1972). "Revision of the Schizomida (Arachnida)". Journal of the New York Entomological Society. 80 (4): 195–204. JSTOR 25008826.

[ReddCoke95-3] Reddell, J.R. & Cokendolpher, J. C. (1995). Catalogue, bibliography, and generic revision of the order Schizomida (Arachnida) (PDF). Speleological Monographs 4. Texas Memorial Museum. Archived from the original (PDF) on 2016-04-11. Retrieved 2016-03-30.

[DunlPennJeke16-4] Dunlop, J.A.; Penney, D. & Jekel, D. (2016). "A summary list of fossil spiders and their relatives, version 16.5" (PDF). World Spider Catalog. Natural History Museum Bern. Retrieved 2016-03-30.