PBDB Taxon

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Acrolepidae

Elonichthyiformes - Acrolepidae

Taxonomy

Acrolepidae was named by Aldinger (1937).

It was assigned to Palaeoniscoidei by Nelson (2006); to Palaeonisciformes by Delsate et al. (2002) and Chrzastek (2008); to Actinopterygii by López-Arbarello et al. (2010); and to Elonichthyiformes by Bakaev et al. (2020).

Subtaxa

Acropholis, Challaia, Challaia cacheutensis, Challaia multidentata, Challaia striata, Gondwanichthys, Kasanilepis, Mesonichthys, Namaichthys, Palaeostrugia, Plegmolepis, Progyrolepis, Reticulolepis, Tholonotus, Watsonichthys

Synonyms

Challaia striata was named by Rusconi (1946).

It was considered a nomen dubium by López-Arbarello et al. (2010).
Challaia multidentata was named by Rusconi (1949). It is a compression fossil. Its type locality is north of Cerro Bayo, which is in a Ladinian/Carnian terrestrial siliciclastic in the Cerro de Las Cabras Formation of Argentina.

It was considered a nomen dubium by López-Arbarello et al. (2010).
Challaia cacheutensis was named by Rusconi (1950).

It was considered a nomen dubium by López-Arbarello et al. (2010).

Synonymy list

Year	Name and author
1937	Acrolepidae Aldinger p. 32
1946	Challaia striata Rusconi
1949	Challaia multidentata Rusconi
1950	Challaia cacheutensis Rusconi
2002	Acrolepidae Delsate et al. p. 37
2006	Acrolepidae Nelson p. 91
2008	Acrolepidae Chrzastek p. 230
2010	Acrolepidae López-Arbarello et al. p. 254
2020	Acrolepidae Bakaev et al. p. 306

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata

Rank	Name	Author
superclass	Gnathostomata
—	Osteichthyes	()
—	Actinopterygii	()
order	Elonichthyiformes	Kazantseva-Selezneva 1977
family	Acrolepidae
family	Acrolepidae

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.

Fm. †Acrolepidae Aldinger 1937

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G. †Acropholis Aldinger 1937

†Acropholis kamensis Esin 1995

†Acropholis silantievi Esin and Mashin 1996

†Acropholis stensioei Aldinger 1937

G. †Challaia

†Challaia magna Rusconi 1949

G. †Gondwanichthys Beltan 1977

†Gondwanichthys maximus Beltan 1977

G. †Kasanilepis Minich 1996

†Kasanilepis chupaevensis Minikh 1996

G. †Mesonichthys Gardiner 1963

†Mesonichthys aitkeni Traquair 1886

†Mesonichthys antipodeus Beltan 1978

G. †Namaichthys Gürich 1923

†Namaichthys digitata Woodward 1891

†Namaichthys molyneuxi Woodward 1903

†Namaichthys schroederi Gürich 1923

†Namaichthys sculpta Egerton 1856

G. †Palaeostrugia Esin 1995

†Palaeostrugia rhombifera Eichwald 1860

G. †Plegmolepis Aldinger 1937

†Plegmolepis groenlandica Aldinger 1937

†Plegmolepis kochi Aldinger 1937

G. †Progyrolepis Fritsch 1893

†Progyrolepis heyleri Poplin 1999

†Progyrolepis speciosus Frič 1875

†Progyrolepis tricessimalaris Dunkle 1946

G. †Reticulolepis Aldinger 1937

†Reticulolepis exsculpta Kurtze 1839

G. †Tholonotus Dunkle and Schaeffer 1956

†Tholonotus braziliensis Dunkle and Schaeffer 1956

G. †Watsonichthys Aldinger 1937

†Watsonichthys lotzi Gürich 1923

†Watsonichthys pectinatus Traquair 1877

†Watsonichthys sphaerosideritarum Fritsch 1895

Invalid names: Challaia cacheutensis Rusconi 1950 [nomen dubium], Challaia multidentata Rusconi 1949 [nomen dubium], Challaia striata Rusconi 1946 [nomen dubium]

Diagnosis

Reference	Diagnosis
A. López-Arbarello et al. 2010	Fusiform actinopterygians distinguished by the following combination of characters: suborbital bones present; postorbital plate of maxilla very large and trapezoid; more than 10 branchiostegal rays; operculum narrower than suboperculum; anteopercular bones present; height of anterior rays in median fins increasing rapidly posteriorly; small fringing fulcra, thick scales strongly ornamented with ganoin ridges, which are parallel or slightly anastomosing (characters based on own observations and partially Aldinger 1937, p. 254).