Homalonotidae

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Homalonotidae
Temporal range: Ordovician–Middle Devonian
Homalonotus.jpg
Homalonotus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Clade:† Artiopoda
Class:† Trilobita
Order:† Phacopida
Suborder:† Calymenina
Family:† Homalonotidae
Chapman, 1890

Homalonotidae is a family of trilobites that lived from the Ordovician to the Devonian. They are characterised by a shovel-like cephalon (head), and are closely related to the family Calymenidae. [1]

It contains the following genera: [2]

Reconstruction of Trimerus delphinocephalus, the exoskeleton of which was probably fringed with many sensory hairs called Setae. TrimerusDelphinocephalus.jpg
Reconstruction of Trimerus delphinocephalus, the exoskeleton of which was probably fringed with many sensory hairs called Setae.

References

  1. ↑ Curtis R. Congreve & Bruce S. Lieberman (2008). "Phylogenetic and biogeographic analysis of Ordovician homalonotid trilobites" (PDF). The Open Paleontology Journal . 1 (1): 24–32. Bibcode:2008OPalJ...1...24C. doi: 10.2174/1874425700801010024 .
  2. ↑ S. M. Gon III. "Order Phacopida" . Retrieved November 14, 2010.
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