Anisaeger

Anisaeger; Temporal range: Early Triassic–Middle Triassic PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Dendrobranchiata
Family:	† Aegeridae
Genus:	† Anisaeger ; Schweitzer et al., 2014
Type species
	Anisaeger brevirostrus; Schweitzer et al., 2014

Last updated August 23, 2025

Anisaeger is a genus of fossil prawns first described from the Luoping biota of the middle Triassic of China ^[1] but also known from the Guiyang biota and Paris biota of the early Triassic.^[2]^[3]

Species

As of 2022, the following four species are included in the genus:^[3]

Anisaeger atavus (Bill, 1914)
Anisaeger brevirostrus Schweitzer et al., 2014
Anisaeger crassipes (Bronn, 1858)
Anisaeger longirostrus Smith et al., 2022

Anisaeger spinifera now bears the name Acanthochirana spinifera.^[3]

References

1 2 Schweitzer, Carrie E.; Feldmann, Rodney M.; Hu, Shixue; Huang, Jinyuan; Zhou, Changyong; Zhang, Qiyue; Wen, Wen; Xie, Tao (May 2014). "Penaeoid Decapoda (Dendrobranchiata) from the Luoping Biota (Middle Triassic) of China: Systematics and Taphonomic Framework" . Journal of Paleontology. 88 (3): 457–474. Bibcode:2014JPal...88..457S. doi:10.1666/13-039. S2CID 128636280 . Retrieved 14 March 2023.
↑ Dai, X.; Davies, J. H. F. L.; Yuan, Z.; Brayard, A.; Ovtcharova, M.; Xu, G.; Liu, X.; Smith, C. P. A.; Schweitzer, C. E.; Li, M.; Perrot, M. G.; Jiang, S.; Miao, L.; Cao, Y.; Yan, J.; Bai, R.; Wang, F.; Guo, W.; Song, H.; Tian, L.; Dal Corso, J.; Liu, Y.; Chu, D.; Song, H. (2023). "A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem". Science. 379 (6632): 567–572. Bibcode:2023Sci...379..567D. doi:10.1126/science.adf1622. PMID 36758082. S2CID 256697946.
1 2 3 Smith, Christopher P. A.; Charbonnier, Sylvain; Jenks, James F.; Bylund, Kevin G.; Escarguel, Gilles; Olivier, Nicolas; Fara, Emmanuel; Brayard, Arnaud (2022). "The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods". Journal of Paleontology. 96 (6): 1235–1263. Bibcode:2022JPal...96.1235S. doi:10.1017/jpa.2022.34. S2CID 249448157.

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[Xie2014-1] 1 2 Schweitzer, Carrie E.; Feldmann, Rodney M.; Hu, Shixue; Huang, Jinyuan; Zhou, Changyong; Zhang, Qiyue; Wen, Wen; Xie, Tao (May 2014). "Penaeoid Decapoda (Dendrobranchiata) from the Luoping Biota (Middle Triassic) of China: Systematics and Taphonomic Framework" . Journal of Paleontology. 88 (3): 457–474. Bibcode:2014JPal...88..457S. doi:10.1666/13-039. S2CID 128636280 . Retrieved 14 March 2023.

[dai2023-2] Dai, X.; Davies, J. H. F. L.; Yuan, Z.; Brayard, A.; Ovtcharova, M.; Xu, G.; Liu, X.; Smith, C. P. A.; Schweitzer, C. E.; Li, M.; Perrot, M. G.; Jiang, S.; Miao, L.; Cao, Y.; Yan, J.; Bai, R.; Wang, F.; Guo, W.; Song, H.; Tian, L.; Dal Corso, J.; Liu, Y.; Chu, D.; Song, H. (2023). "A Mesozoic fossil lagerstätte from 250.8 million years ago shows a modern-type marine ecosystem". Science. 379 (6632): 567–572. Bibcode:2023Sci...379..567D. doi:10.1126/science.adf1622. PMID 36758082. S2CID 256697946.

[Smith_et_al._2022-3] 1 2 3 Smith, Christopher P. A.; Charbonnier, Sylvain; Jenks, James F.; Bylund, Kevin G.; Escarguel, Gilles; Olivier, Nicolas; Fara, Emmanuel; Brayard, Arnaud (2022). "The Paris Biota decapod (Arthropoda) fauna and the diversity of Triassic decapods". Journal of Paleontology. 96 (6): 1235–1263. Bibcode:2022JPal...96.1235S. doi:10.1017/jpa.2022.34. S2CID 249448157.

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