Proconodontida

Proconodontida; Temporal range: Possible descendant taxon Belodellida survives to the Devonian or Permian
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Conodonta
Subclass:	†Cavidonti
Order:	†Proconodontida; Sweet, 1988
Synonyms
	Cordylodontacea Lindström, 1970; Proconodontacea Miller, 1981; Fryxellodontoacea Miller, 1981;

Proconodontida is an order of conodonts which originated in the late Cambrian (Furongian) and persisted partly through the Ordovician.^[1] The ancestral proconodont, Proconodontus, was one of the earliest euconodonts ("true conodonts") to appear. Proconodonts are often equated with the broader group Cavidonti, which occupies one side of a basal division in the evolution of early euconodonts in the Cambrian. All other euconodonts occupy Conodonti, the other side of the Cambrian split.^[1]

Proconodontida may be ancestral to another order, Belodellida.^[1] Belodellids originate in the Ordovician and survive up to the Devonian^[1] or even the Permian (if Caenodontus qualifies as a member of the order).^[2]

^ ^a ^b ^c ^d Cite error: The named reference :3 was invoked but never defined (see the help page).
^ Nestell, Merlynd K.; Wardlaw, Bruce R. (2015). "An apparatus reconstruction of the conodont Caenodontus serrulatus Behnken 1975". Micropaleontology. 61 (4–5): 293–300. doi:10.47894/mpal.61.4.03. ISSN 0026-2803.

[:3-1] Cite error: The named reference :3 was invoked but never defined (see the help page).

[2] Nestell, Merlynd K.; Wardlaw, Bruce R. (2015). "An apparatus reconstruction of the conodont Caenodontus serrulatus Behnken 1975". Micropaleontology. 61 (4–5): 293–300. doi:10.47894/mpal.61.4.03. ISSN 0026-2803.

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