Hyolithidae

Hyolithidae Temporal range: Early Cambrian–Late Permian [1] PreꞒ Ꞓ O S D C P T J K Pg N
Hyolithes cerops
Haplophrentis carinatus
Scientific classification
Kingdom:	Animalia
Class:	† Hyolitha
Order:	† Hyolithida
Family:	† Hyolithidae Nicholson, 1872 [2]
Type genus
† Hyolithes [1] d'Eichwald, 1840 [3]
Genera
See text

The Hyolithidae are a family of hyoliths ^{[1] [2]} (an extinct class of basal lophotrochozoans ^[4] ) that lived from the Early Cambrian until the Late Permian. ^[1]

Genera

^{[1] [2]}

• † Brittanella Malinky & Racheboeuf, 2010
• † Carinolithes Sysoev, 1958
• † Dilytes Marek, 1974
• † Elegantilites Marek, 1966
• † Eumorpholites Marek, 1967
• † Gompholites Marek, 1967
• † Hallotheca Malinky, Linsley & Yochelson, 1987
• † Haplophrentis Matthew, 1899
• † Helenia Walcott, 1890
• † Hyolithes d'Eichwald, 1840 (type ^[1] )
• † Joachimilites Marek, 1967
• † Korilithes Missarzhevsky, 1969
• † Maxilites Marek, 1972
• † Nevadalites Marek, 1976
• † Nevadotheca Malinky, 1988
• † Novakotheca Malinky, 1990

Possible members

^[2]

• † Amphorotheca Pillet & Beaulieu, 1995
• † Australolithes Burrow & Smith, 2024
• † Nervolites Marek, 1974
• † Sololites Marek, 1967
• † Yalarrnga Kruse, 2002

References

1. Hyolithidae in the Paleobiology Database
2. Hyolithidae Nicholson, 1872 †. Retrieved through: Interim Register of Marine and Nonmarine Genera  on 24 January 2026.
3. Hyolithes in the Paleobiology Database
4. Liu, Fan; Skovsted, Christian B; Topper, Timothy P; Zhang, Zhifei; Shu, Degan (2020-02-01). "Are hyoliths Palaeozoic lophophorates?". National Science Review. 7 (2): 453–469. doi: 10.1093/nsr/nwz161 . ISSN   2095-5138. PMC   8289160 . PMID   34692060.