Guildayichthyidae is a prehistoric family of marine fish from the
Mississippian Bear Gulch Limestone
The Bear Gulch Limestone is a limestone-rich geological lens in central Montana, renowned for the quality of its late Mississippian-aged fossils. It is exposed over a number of outcrops northeast of the Big Snowy Mountains, and is often consider ...
of
Montana
Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columb ...
.
It is the only family in the order Guildayichthyiformes. Guildayichthyids possess an uncommon mixture of primitive and modern characteristics in their skull bones.
Taxonomy
This family consists of the following genera and species:
* Genus ''
Guildayichthys''
Lund, 2000
** Species ''
Guildayichthys carnegiei''
Lund, 2000
* Genus ''
Discoserra
''Discoserra'' is a prehistoric ray-finned fish from the Mississippian of Montana, a member of the Guildayichthyiformes, with a round body and a skull possessing primitive and modern traits. ''Discoserra'' is about 60 mm long. In 2006, ''D ...
''
Lund, 2000
** Species ''
Discoserra pectinodon
''Discoserra'' is a prehistoric Actinopterygii, ray-finned fish from the Mississippian (geology), Mississippian of Montana, a member of the Guildayichthyiformes, with a round body and a skull possessing primitive and modern traits. ''Discoserra' ...
''
Lund, 2000
References
Prehistoric fish of North America
Prehistoric ray-finned fish families
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