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Extinct genus of chelicerate
Anderella is a
genus of
synziphosurine ,
[1] a
paraphyletic group of fossil
chelicerate
arthropods .
[2]
[3] Anderella was regarded as part of the
clade
Prosomapoda .
[2]
[4]
[5]
[6]
[3]
Fossils of the single and
type species , A. parva , have been discovered in
deposits of the
Carboniferous
period in
Montana , in the
United States .
[7]
[2] Anderella is the first
[1] and so far (as of 2020) the only Carboniferous synziphosurine being described, making it the youngest member of synziphosurines.
[3] Anderella is also one of the few synziphosurine genera with fossil showing evidence of appendages, but the details are obscure due to their poor preservation.
[1]
[3]
The
prosoma of Anderella possess a suboval
carapace slightly longer than the externally 10-segmented
opisthosoma (excluding
telson ).
[1] A row of axial nodes run through the
opisthosomal
tergites .
[1] The last 3 opisthosomal segments (which forming the postabdomen) are longer and lacking pleurae (lateral extensions).
[1]
References
^
a
b
c
d
e
f Moore, Rachel A.; McKENZIE, Scott C.; Lieberman, Bruce S. (2007).
"A Carboniferous Synziphosurine (Xiphosura) from the Bear Gulch Limestone, Montana, USA" . Palaeontology . 50 (4): 1013–1019.
doi :
10.1111/j.1475-4983.2007.00685.x .
S2CID
59449700 .
^
a
b
c Lamsdell, James C. (2013).
"Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura" . Zoological Journal of the Linnean Society . 167 (1): 1–27.
doi :
10.1111/j.1096-3642.2012.00874.x .
ISSN
0024-4082 .
^
a
b
c
d Bicknell, Russell D. C.; Pates, Stephen (2020).
"Pictorial Atlas of Fossil and Extant Horseshoe Crabs, With Focus on Xiphosurida" . Frontiers in Earth Science . 8 : 98.
Bibcode :
2020FrEaS...8...98B .
doi :
10.3389/feart.2020.00098 .
ISSN
2296-6463 .
^ Selden, Paul A.; Lamsdell, James C.; Qi, Liu (2015).
"An unusual euchelicerate linking horseshoe crabs and eurypterids, from the Lower Devonian (Lochkovian) of Yunnan, China" . Zoologica Scripta . 44 (6): 645–652.
doi :
10.1111/zsc.12124 .
ISSN
0300-3256 .
S2CID
55264483 .
^ Lamsdell, James C.; Briggs, Derek E. G.; Liu, Huaibao P.; Witzke, Brian J.; McKay, Robert M. (2015).
"A new Ordovician arthropod from the Winneshiek Lagerstätte of Iowa (USA) reveals the ground plan of eurypterids and chasmataspidids" . The Science of Nature . 102 (9–10): 63.
Bibcode :
2015SciNa.102...63L .
doi :
10.1007/s00114-015-1312-5 .
ISSN
0028-1042 .
PMID
26391849 .
S2CID
8153035 .
^ Bicknell, Russell D. C.; Lustri, Lorenzo; Brougham, Tom (2019-12-01). "Revision of "Bellinurus" carteri (Chelicerata: Xiphosura) from the Late Devonian of Pennsylvania, USA". Comptes Rendus Palevol . 18 (8): 967–976.
doi :
10.1016/j.crpv.2019.08.002 .
ISSN
1631-0683 .
^ Dunlop, J. A.; Penney, D.; Jekel, D. (2018).
"A summary list of fossil spiders and their relatives" (PDF) . World Spider Catalog .
Natural History Museum Bern . pp. 1–296.