Animalia > Chordata > Holonematidae

Holonematidae

Wikipedia Abstract

Holonematidae is an extinct family of relatively large arthrodire placoderms from the Early to Late Devonian. Almost all fossil specimens are of armor fragments, though, all have distinctive ornamentation, often of unique arrangements and patterns of tubercles, that are diagnostic of the family. The trunkshield is very elongated, giving the armor an overall "barrel" like appearance.
View Wikipedia Record: Holonematidae

Genus

Belemnacanthus (1)
Deirosteus (3)
Deveonema (1)
Groenlandaspis (5)
Gyroplacosteus (3)
Holonema (10)
Megaloplax (1)
Rhenonema (1)
Tiaraspis (1)
Tropidosteus (1)
Westralichthys (1)

(...) = Species count
(...) = Endangered count
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External References

Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0