Portfellidae
Portfellidae is a zoological family name that has appeared in paleontological classifications to group certain fossil organisms. The usage of Portfellidae is not consistent across sources, and its status as a valid, distinct family is debated in the literature. Some authors treat Portfellidae as a legitimate clade with a defined type genus and diagnostic characters, while others consider the name a nomen dubium or a junior synonym of an existing family.
Type genus and diagnosis: The designation of a type genus for Portfellidae is inconsistently reported, and
Fossil record and distribution: Reports attributed to Portfellidae come from fragmentary fossil material found in a
Higher-level classification: Because the family is not universally accepted, its placement within a broader taxonomic framework
See also: List of prehistoric animal families; Nomenclature in paleontology; Nomen dubium.
References: The article relies on a limited set of publications. Researchers seeking a current assessment should