Biology:Cricoidoscelosus
| Cricoidoscelosus | |
|---|---|
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| Specimen from the Yixian Formation of China | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
| Class: | |
| Order: | |
| Suborder: | Pleocyemata
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| Infraorder: | Astacidea
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| Superfamily: | |
| Genus: | †Cricoidoscelosus Taylor et al., 1999
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| Binomial name | |
| †Cricoidoscelus aethus Taylor et al., 1999
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| Synonyms | |
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Mongolarachne chaoyangensis Cheng et al., 2019 | |
Cricoidoscelosus[1][2] is an extinct genus of crayfish discovered in the Yixian Formation in China , with only the type species, C. aethus, known, that may be one of, if not, the oldest known fossil crayfish to date.[3][4]
Cricoidoscelosus was initially believed to be Late Jurassic (Tithonian) in age,[4] but it is now confirmed to have been Early Cretaceous (Barremian-Aptian) in age.[3]
Taxonomy
"Mongolarachne" chaoyangensis
In 2019, a supposed new species of the spider Mongolarachne, "Mongolarachne" chaoyangensis was described from the Yixian Formation in China.[5] However, in a later publication that same year, when the specimen was subject to fluorescence microscopy, it was shown that the specimen was a forgery using a fossil of Cricoidoscelosus as a base, that had been painted to look like a spider, and as such the species was a junior synonym of Cricoidoscelosus.[3]
References
- ↑ "Cricoidoscelosus Taylor, Schram & Shen, 1999" (in en). GBIF. https://www.gbif.org/species/4649040.
- ↑ "Fossilworks: Cricoidoscelosus". Fossilworks. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=217950.
- ↑ 3.0 3.1 3.2 Paul A. Selden; Alison N. Olcott; Matt R. Downen; Dong Ren; Chungkun Shih; Xiaodong Cheng (2019). "The supposed giant spider Mongolarachne chaoyangensis, from the Cretaceous Yixian Formation of China, is a crayfish". Palaeoentomology 2 (5): 515–522. doi:10.11646/palaeoentomology.2.5.15. http://www.paulselden.net/uploads/7/5/3/2/7532217/yixiancrayfish2019.pdf.
- ↑ 4.0 4.1 Taylor, R.S., Schram, F.R. & Shen, Y.B. (1999) A new crayfish family (Decapoda: Astacida) from the Upper Jurassic of China, with a reinterpretation of other Chinese crayfish taxa, Paleontological Research, 3, 121–136.
- ↑ Xiaodong Cheng; Sizhao Liu; Wenjuan Huang; Li Liu; Hongming Li; Yinxian Li (2019). "A new species of Mongolarachnidae from the Yixian Formation of western Liaoning, China". Acta Geologica Sinica (English Edition) 93 (1): 227–228. doi:10.1111/1755-6724.13780. http://www.geojournals.cn/dzxben/ch/reader/create_pdf.aspx?file_no=2019endzxb01016&flag=1&journal_id=dzxben&year_id=2019.
Wikidata ☰ Q107254309 entry
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