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Banffiidae
Banfiidae is a family of extinct banffozoan animals from North America and China. The family name is sometimes spelt Banffidae. It includes ''Banffia'', ''Heteromorphus'', and possibly ''Skeemella''. The family may be paraphyletic. A ''Heteromorphus''-like dwarf Banffozoa#Form A, "Form A" is allied with this group at the class level, but has not been formally described or assigned to this family. Description Banffiids have a bipartite body with a smooth anterior part that may or may not have a lateral groove, and a posterior part with many segments. Lateral pouches have not been seen, although some questions remain regarding their possible presence in ''Skeemella''. The entire body is twisted dextrally (from an anterior view). Gut diverticula may be present, but the structures interpreted as such could alternatively be a circulatory system. The anus is terminal, despite initial reports to the contrary in ''Heteromorphus''. Distribution Banffiids have been found across multiple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banffia Confusa
''Heteromorphus'' is an extinct genus of Banffiidae, banffiid from the lower Cambrian Chengjiang lagerstatte. It contains one broadly accepted species, ''Heteromorphus confusus'', as well as a proposed junior synonym, ''Heteromorphus longicaudatus'' that may prove to be a separate species as additional specimens are examined. A much smaller species labeled "Form A" is allied with ''Heteromorphus'' at the class (biology), class level but has not been formally described or assigned to ''Heteromorphus'' itself. Description Like ''Banffia'', ''Heteromorphus'' has a two-part body with a notable constriction between the parts, and a crossover that effectively reverses the dorsal and ventral sides between the anterior and posterior sections. The posterior portion is segmented, although the common presence of wrinkling makes counting the segments difficult. The anterior body shape ranges from torpedo-like to more rectangular, with a near-vertical anterior edge. ''Heteromorphus'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |