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Taklamakania





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Taklamakania is a genus of asaphid trilobites of the family Raphiophoridae that lived during the late CaradocofInner Mongolia, China. Like all raphiophorids it is blind, with a headshield (orcephalon) that is subsemicircular, carrying genal spines and a forward directed spine on the central raised area (orglabella), with the front of the glabella inflated and the natural fracture lines (orsutures) of the cephalon coinciding with its margin. It is easily distinguished from most other raphiophorids by the 3 thorax segments. Pseudampyxina, Nanshanaspis, and Kongqiangheia also have only 3 such segments, but all three lack the frontal spine that emanates from the glabellum of Taklamakania species. All other raphiophorid genera have at least 5 thorax segments. Three species, T. tarimensis, T. tarimheensis, and T. xinjiangensis, have been assigned to this genus so far.[1]

Taklamakania
Temporal range: late Caradoc

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T. tarimensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Trilobita
Order: Asaphida
Family: Raphiophoridae
Genus: Taklamakania
Zhang, 1979
Type species
Taklamakania tarimensis

Species
  • T. tarimensis
  • T. tarimheensis
  • T. xinjiangensis

Etymology

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The generic name Taklamakania refers to the Taklamakan desert, the area where its fossils were found. The species epithet tarimensis is also a geographic derivation in reference to the Tarim basin, which includes the Taklamakan desert.[1]

Evolution

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Adult T. tarimensis are almost indistinguishable from juvenile Ampyxina powelli, and it is assumed that Taklamakania developed from Ampyxina through paedomorphosis.[1]

Junior homonym

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References

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  1. ^ a b c Zhou, Z.; Webby, B.D.; Yuan, W. (1995). "Ordovician trilobites from the Yingan Formation of northwestern Tarim, Xinjiang, northwestern China". Alcheringa: An Australasian Journal of Palaeontology. 19 (1): 47–72. Bibcode:1995Alch...19...47Z. doi:10.1080/03115519508619098.
  • ^ Medvedev, G.S. (2006). "To the Systematics and Nomenclature of Tenebrionid Beetles of the Tribes Phaleriini, Lachnogyini, Klewariini, and Blaptini (Coleoptera, Tenebrionidae)" (PDF). Entomological Review. 86 (7): 820–839. doi:10.1134/S0013873806070062. S2CID 39347776. Archived from the original (PDF) on 2015-12-22.

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    Last edited on 23 November 2023, at 05:45  





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    This page was last edited on 23 November 2023, at 05:45 (UTC).

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