PBDB Taxon

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Pilekiinae

Trilobita - Phacopida - Cheiruridae

Taxonomy

Pilekiidae was named by Sdzuy (1955). It is not extant.

It was considered an invalid subgroup of Cheiruridae by Adrain (2011); it was reranked as the subfamily Pilekiinae by Edgecombe et al. (1999) and Perez-Peris et al. (2021).

It was assigned to Phacopida by Whittington et al. (1997) and Fortey and Bruton (2013); and to Cheiruridae by Edgecombe et al. (1999) and Perez-Peris et al. (2021).

Synonymy list

Year	Name and author
1955	Pilekiidae Sdzuy
1997	Pilekiidae Whittington et al. p. 300
1999	Pilekiinae Edgecombe et al.
2013	Pilekiidae Fortey and Bruton
2021	Pilekiinae Perez-Peris et al. pp. 859 - 860

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa
—	Panarthropoda
phylum	Arthropoda	Latreille 1829

Rank	Name	Author
subphylum	Artiopoda	(Hou and Bergstrom)
class	Trilobita	Walch 1771
order	Phacopida	Salter 1864
suborder	Cheirurina	Harrington and Leanza 1957
family	Cheiruridae	Hawle and Corda 1847
subfamily	Pilekiinae	(Sdzuy 1955)
subfamily	Pilekiinae	(Sdzuy 1955)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Subfm. †Pilekiinae Sdzuy 1955

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G. †Anacheirurus Reed 1896

†Anacheirurus adserai Vela and Corbacho 2007

Invalid names: Lehua colli Vela 2007 [synonym], Lehua corbachoi Vela 2007 [synonym], Lehua iannacconnei Corbacho 2008 [synonym], Lehua ponti Vela 2007 [synonym], Lehua tahirii Corbacho 2008 [synonym], Lehua velai Corbacho 2008 [synonym]

†Anacheirurus bohemicus Ruzicka 1926

†Anacheirurus frederici Salter 1864

†Anacheirurus nanus Mergl 1984

†Anacheirurus plutonis Bulman and Rushton 1973

G. †Chashania Lu and Sun 1977

G. †Courtessolium Pribyl and Vanek 1985

†Courtessolium prepater Courtessole and Pillet 1975

G. †Demeterops Pribyl and Vanek 1985

†Demeterops loella Demeter 1973

G. †Emsurina Sivov 1955

G. †Eocheirurus Rozova 1960

G. †Koraipsis Kobayashi 1934

†Koraipsis spinus Kobayashi 1934

G. †Landyia Jell 1985

G. †Macrogrammus Whittard 1966

†Macrogrammus pengi Edgecombe et al. 1999

†Macrogrammus rafi Edgecombe et al. 1999

G. †Metapilekia Harrington 1938

†Metapilekia bilirata Harrington 1938

G. †Metapliomerops Kobayashi 1934

†Metapliomerops extenuata Raymond 1924

G. †Parapilekia Kobayashi 1934

†Parapilekia atecae Hammann 1971

†Parapilekia beattyana Holliday 1942

†Parapilekia ferrigena Mergl 1994

†Parapilekia jacquelinae Fortey 1980

†Parapilekia olesnaensis Růžička 1935

†Parapilekia sougyi Destombes et al. 1969

G. †Pilekia Barton 1915

†Pilekia apollo Billings 1860

†Pilekia trio Hintze 1953

G. †Pliomeroides Harrington and Leanza 1957

†Pliomeroides deferrariisi Harrington 1938

G. †Pseudopliomera Lu and Qian 1978

G. †Seisonia Kobayashi 1934

†Seisonia sphericauda Kobayashi 1934

G. †Sinoparapilekia Peng 1990

G. †Tesselacauda Ross 1951

†Tesselacauda depressa Ross 1951

G. †Tienshihfuia Lu in Lu et al 1976

G. †Victorispina Jell 1985

G. †Yinaspis Zhang and Fan 1960

Invalid names: Sinoparapilekiini Peng 1990 [empty]

Diagnosis

Reference	Diagnosis
F. Perez-Peris et al. 2021	Cheiruridae with thoracic pleura divided into anterior and posterior bands by a deep, long (tr.) pleural furrow; broad (tr.) proximal part of thoracic pleura with fulcrum situated distally 2/3 from the axis; pygidium with at least two first pleural tergites displaying a deep pleural furrow that divide the pleura into anterior and posterior bands, as in the thoracic pleura