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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Merostomata
Ordo: Xiphosura
Subordo: Xiphosurida
Infraordo: Limulina

Familia: Limulidae
Genus: Tachypleus
Species: T. gigas – T. tridentatus

Tachypleus is a genus of south, southeast and east Asian horseshoe crabs in the family Limulidae.

There are two extant (living) species:

Tachypleus gigas (Müller, 1785)
Tachypleus tridentatus (Leach, 1819)

And two extinct species only known from fossil.[1]

Tachypleus decheni (Zincken, 1862) Upper Eocene Domsen Sands, Germany
Tachypleus syriacus (Woodward, 1879) Upper Cretaceous (Cenomanian) Haqel and Hjoula Konservat-Lagerstatten, Lebanon


Bicknell, Russell D. C.; Błażejowski, Błażej; Wings, Oliver; Hitij, Tomaž; Botton, Mark L. (2021-03-02). Zhang, Xi‐Guang (ed.). "Critical re‐evaluation of Limulidae uncovers limited Limulus diversity". Papers in Palaeontology. 7 (3): 1525–1556. doi:10.1002/spp2.1352. ISSN 2056-2799. S2CID 233783546.


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