Harpactocarcinus yozgatensis

Harpactocarcinus yozgatensis; Temporal range: Ypresian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Brachyura
Family:	† Zanthopsidae
Genus:	† Harpactocarcinus
Species:	†H. yozgatensis
Binomial name
	†Harpactocarcinus yozgatensis; Schweitzer, Shirk, Ćosocić, Okan, Feldmann & Hoşgör, 2007

Last updated March 12, 2025

Harpactocarcinus yozgatensis is an extinct species of crab in the family Zanthopsidae.^[1]^[2] It was first described in 2007 from a bed of limestone dating to the Cuisian Eocene near the city of Yozgat in central Turkey.^[1]

Description

Harpactocarcinus yozgatensis has a densely punctate carapace which is approximately 0.8x as long as it is wide and features four frontal spines and ten to thirteen small, anterolateral ones.^[1] Like other species of Harpactocarcinus, it exhibits moderate heterochely, having a larger right cheliped than its left.^[1] It has very deep orbits which can – in conjunction with its small chelae – distinguish it from other species of Harpactocarcinus .^[1]

The excellent preservation of H. yozgatensis presented the first robust description of the abdomen of Harpactocarcinus.^[1] The male abdomen's segments are narrow, whereas the female's are convex and broad.^[1] The first and second segments of the abdomen are fused in both sexes, and in males, the third through fifth segments are also fused.^[1]

References

1 2 3 4 5 6 7 8 Schweitzer, Carrie E.; Shirk, Aubrey M.; Ćosocić, Vlasta; Okan, Yavuz; Feldmann, Rodney M.; Hoşgör, Izzet (September 2007). "New species of Harpactocarcinus from the Tethyan Eocene and their paleoecological setting". Journal of Paleontology . 81 (5): 1091–1100. doi:10.1666/pleo05-155.1. JSTOR 4498861.
↑ De Grave, Sammy (3 January 2023). "Harpactocarcinus yozgatensis Schweitzer, Shirk, Ćosocić, Okan, Feldmann & Hoşgör, 2007 †". WoRMS. World Register of Marine Species . Retrieved 11 March 2025.

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[Schweitzer_et_al._2007-1] 1 2 3 4 5 6 7 8 Schweitzer, Carrie E.; Shirk, Aubrey M.; Ćosocić, Vlasta; Okan, Yavuz; Feldmann, Rodney M.; Hoşgör, Izzet (September 2007). "New species of Harpactocarcinus from the Tethyan Eocene and their paleoecological setting". Journal of Paleontology . 81 (5): 1091–1100. doi:10.1666/pleo05-155.1. JSTOR 4498861.

[WoRMS-2] De Grave, Sammy (3 January 2023). "Harpactocarcinus yozgatensis Schweitzer, Shirk, Ćosocić, Okan, Feldmann & Hoşgör, 2007 †". WoRMS. World Register of Marine Species . Retrieved 11 March 2025.

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