Hurdiidae

Hurdiidae Temporal range: Cambrian Stage 4–Lower Devonian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Stem-group:	Arthropoda
Class:	†Dinocaridida
Order:	†Radiodonta
Suborder:	†Anomalocarida
Family:	†Hurdiidae Vinther et al. 2014

Hurdiidae is a clade of anomalocaridan. It is the most long-lived anomalocaridan clade, lasting from the Cambrian period to the Devonian period.^[1]

Definition

Hurdiidae is the most inclusive clade containing Hurdia victoria but not Amplectobelua symbrachiata, Anomalocaris canadensis, or Tamisiocaris borealis.^[1]

Phylogeny

The most recent phylogeny of hurdiids, accompanying the description of the hurdiid Aegirocassis benmoulae, is as follows:^[2]

Hurdiidae	Fezouata hurdiid appendage Schinderhannes bartelsi Peytoia nathorsti cf. Peytoia Balang Aegirocassis benmoulae Hurdia victoria Hurdia cf. victoria Stanleycaris hirpex Hurdia sp. Utah Hurdia sp. Burgess

References

1. Vinther, Jakob; Stein, Martin; Longrich, Nicholas R.; Harper, David A. T. (2014). "A suspension-feeding anomalocarid from the Early Cambrian". Nature 507: 496–499. doi:10.1038/nature13010.
2. Van Roy, Peter; Daley, Allison C.; Briggs, Derek E. G. (2015). "Anomalocaridid trunk limb homology revealed by a giant filter-feeder with paired flaps". Nature. doi:10.1038/nature14256.