Lenisicaris

Lenisicaris; Temporal range: Cambrian Stage 3 to Cambrian Stage 4 521–509 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	A reconstruction of L. lupata's frontal appendage
	A fossil of L.? pennsylvanica
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Dinocaridida
Order:	†Radiodonta
Family:	†Anomalocarididae
Genus:	†Lenisicaris; Wu et al, 2021
Species
	L. lupata Wu et al, 2021; L. pennsylvanica? Resser, 1929;

Lenisicaris is a Cambrian anomalocaridid radiodont, known from the Maotianshan Shales of China, and possibly the Kinzers Formation of Pennsylvania.^[1]

Description[edit]

Lenisicaris is only known from frontal appendages, however these have several distinguishing traits, most noticeably the lack of auxiliary spines. ^[2]The type species, L. lupata has smaller, triangular endites, closely resembling those of Anomalocaris. L.? pennsylvanica has larger and more rectangular endites, with those on odd-numbered podomeres being smaller,^[1] which casts doubt on whether it is truly a species of Lenisicaris.

Etymology[edit]

Lenisicaris derives from the word "lenis", meaning "smooth" from the non-spinose endites, and the word "caris", meaning "shrimp". The specific name lupata derives from the endites' shape resembling wolf fangs,^[1] and the specific name pennsylvanica derives from the fact that the fossil was found in Pennsylvania.

References[edit]

^ ^a ^b ^c Wu, Yu; Ma, Jiaxin; Lin, Weiliang; Sun, Ao; Zhang, Xingliang; Fu, Dongjing (1 May 2021). "New anomalocaridids (Panarthropoda: Radiodonta) from the lower Cambrian Chengjiang Lagerstätte: Biostratigraphic and paleobiogeographic implications". Palaeogeography, Palaeoclimatology, Palaeoecology. 569. Bibcode:2021PPP...56910333W. doi:10.1016/j.palaeo.2021.110333. S2CID 233565727.
^ Potin, Gaëtan J.-M.; Daley, Allison C. (2023). "The significance of Anomalocaris and other Radiodonta for understanding paleoecology and evolution during the Cambrian explosion". Frontiers in Earth Science. 11. Bibcode:2023FrEaS..1160285P. doi:10.3389/feart.2023.1160285. ISSN 2296-6463.

[Wu_et_al.-1] Wu, Yu; Ma, Jiaxin; Lin, Weiliang; Sun, Ao; Zhang, Xingliang; Fu, Dongjing (1 May 2021). "New anomalocaridids (Panarthropoda: Radiodonta) from the lower Cambrian Chengjiang Lagerstätte: Biostratigraphic and paleobiogeographic implications". Palaeogeography, Palaeoclimatology, Palaeoecology. 569. Bibcode:2021PPP...56910333W. doi:10.1016/j.palaeo.2021.110333. S2CID 233565727.

[2] Potin, Gaëtan J.-M.; Daley, Allison C. (2023). "The significance of Anomalocaris and other Radiodonta for understanding paleoecology and evolution during the Cambrian explosion". Frontiers in Earth Science. 11. Bibcode:2023FrEaS..1160285P. doi:10.3389/feart.2023.1160285. ISSN 2296-6463.

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