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Helohyidae
Taxonomy
Helohyidae was named by Marsh (1877).
It was reranked as the subfamily Helohyinae by Gazin (1955) and Stucky (1998); it was considered an invalid subgroup of Artiodactylamorpha by Spaulding et al. (2009).
It was assigned to Pantolestoidea by Hay (1902); to Dichobunidae by Gazin (1955); to Anthracotherioidea by Coombs and Coombs (1977); to Artiodactyla by Marsh (1877), Pilgrim (1940), Carroll (1988), Stucky (1998) and Ferrusquía-Villafranca (2006); to Dichobunoidea by McKenna and Bell (1997), Vislobokova (2004) and Theodor et al. (2007); and to Suina by Burger and Jolley (2020).
It was reranked as the subfamily Helohyinae by Gazin (1955) and Stucky (1998); it was considered an invalid subgroup of Artiodactylamorpha by Spaulding et al. (2009).
It was assigned to Pantolestoidea by Hay (1902); to Dichobunidae by Gazin (1955); to Anthracotherioidea by Coombs and Coombs (1977); to Artiodactyla by Marsh (1877), Pilgrim (1940), Carroll (1988), Stucky (1998) and Ferrusquía-Villafranca (2006); to Dichobunoidea by McKenna and Bell (1997), Vislobokova (2004) and Theodor et al. (2007); and to Suina by Burger and Jolley (2020).
Synonymy list
| Year | Name and author |
|---|---|
| 1877 | Helohyidae Marsh p. 38 |
| 1902 | Helohyidae Hay p. 650 |
| 1940 | Helohyidae Pilgrim p. 141 |
| 1955 | Helohyinae Gazin p. 22 |
| 1977 | Helohyidae Coombs and Coombs p. 292 |
| 1988 | Helohyidae Carroll |
| 1997 | Helohyidae McKenna and Bell p. 403 |
| 1998 | Helohyinae Stucky |
| 2004 | Helohyidae Vislobokova p. 90 |
| 2006 | Helohyidae Ferrusquía-Villafranca p. 993 |
| 2007 | Helohyidae Theodor et al. p. 39 |
| 2020 | Helohyidae Burger and Jolley |
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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. †Helohyidae Marsh 1877
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G. †Achaenodon Cope 1873
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†Achaenodon fremdi Lucas et al. 2004
†Achaenodon insolens Cope 1873
†Achaenodon robustus Osborn 1883
†Achaenodon uintense Osborn 1895
Invalid names: Protelotherium Osborn 1895 [synonym]
G. †Gobiohyus Matthew and Granger 1925
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†Gobiohyus orientalis Matthew and Granger 1925
†Gobiohyus pressidens Matthew and Granger 1925
†Gobiohyus reshetovi Vislobokova 2004
†Gobiohyus robustus Matthew and Granger 1925
†Gobiohyus yuanchuensis Young 1937
G. †Helohyus Marsh 1872
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Invalid names: Ithygrammodon cameloides Osborn et al. 1878 [nomen dubium], Lophiohyus Sinclair 1914 [synonym], Thinotherium Cope 1870 [synonym], Thinotherium Marsh 1872 [synonym]
G. †Ithygrammodon Osborn et al. 1878
G. †Lophiohys
G. †Pakkokuhyus Holroyd and Ciochon 1995
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†Pakkokuhyus lahirii Pilgrim 1928
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Invalid names: Siamotherium pondaungensis Ducroq and Soe 2000 [synonym]
Diagnosis
No diagnoses are available