Pterigiophora

Pterigiophora includes all of the descendants of the Pirouetting Deepworm on Sagan 4.

=Class - Nectavermes= (proto-beakworms)

Order - Pulchrivermiformes
(basal deepworms)

Family - Pulchrivermidae
(deepworms)

Order - Eoichthyvermiformes
(Beaked Deepworm)

Family - Eoichthyvermidae
(Beaked Deepworm)

=Class – Rostroichthyes= (early beakworms, gillfins, and parrotworms)

Order – Vermirostrates
(early beakworms)

Family - Ichthyvermidae
(stem beakworms)

Family - Rostratichthidae
(basal crown beakworms)

Family - Rostrodontidae
(Tusked Beakworm)

Family - Plumovestatidae
(Feathered Beakworm)

Family - Wermisoridae
(Coastworm Lancer)

Family - Kristalidae
(Krystal Snoutsuckling)

Family - Catasphenognathidae
(hookbeaks)

Family - Astinduzilaridae
(Flying Silverling)

Family - Abyssovermichthidae
(Deep-Sea Scissorworm)

Order - Caustisputatoriformes
(Maurworm and descendants)

Family - Caustisputatoridae
(Maurworm)

Family - Zappasaganidae
(whipskippers)

Order – Dorsibranchia
(gillfins)

Family - Deirichthidae
(Scraping Beakworm)

Family - Niducaudidae
(basal gillfins)

Family - Sagittactinidae
(Dartfin)

Family - Erpinaletidae
(later gillfins)

Order – Palustrigyrinia
(waterworms+phibis)

Family - Acanthogyrinidae
(basal waterworms)

Family – Fabacolaculidae
(Dumpling Waterworm)

Family - Megataenichthidae
(MacDoogal Waterworm)

Family - Bizkarroidae
(snapper waterworms)

Family - Cetacankistridae
(maggot waterworms)

Family - Branchipunctoridae
(piercing waterworms)

Family - Foetiscolicidae
(Snappermaw Waterworm)

Family - Podogyrinidae
(phibis)

Family - Flagellactinidae
(subterrene phibis)

Order - Entomopsittaca
(mekaroaches)

Family - Saproherpetidae
(Walins)

Family - Entomoichthidae
(mekaroaches)

Family - Dredgeridae
(Dredger)

Family - Branchiocridae
(Gillegs)

Family - Frangoherpetidae
(bullroaches)

Order – Psittacocephalia
(basal parrotworms)

Family - Psittacovermidae
(basal parrotworms)

Family - Obscuranguillidae
(plagus)

Family - Plumaluesidae
(featherfins)

=Class – Caudabranchia= Caudabranchia means "gill tail" in Latin. Accordingly, most members of this order have the common name of "gilltail".

Order - Branchiouriformes
(basal gilltails)

Family - Branchiouridae
(early gilltails)

Family - Gilltailiomidae
(Arctic Gilltail)

Family - Anatopichthidae
(duckbilled gilltails)

Family - Fulguriruptoridae
(shockshell gilltails)

Family - Triscutellichthidae
(Globespot Gilltail)

Family - Beifuyuidae
(Bellysucker Gilltail)

Family - Inflamapiscidae
(Inflator Gilltail)

Family - Daohuxuyuidae
(Pick Gilltail)

Family - Acerotidae
(gillungs)

Order - Branchiolatiformes
(swift gilltails)

Family- Branchiolatidae
(swift gilltails)

Order - Daggadoliformes
(gilgans and their relatives)

Family - Misprimzarachidae
(Scissor-Beak Gilltail)

Family - Daggadolidae
(gilgans)

Order - Luzangaingiriformes
(longtails)

Family - Zhenhiuyuidae
(Shortbeak Gilltail, Ichthy Gilltail)

Family - Luzangaingiridae
(longtails)

Family - Mokoluzeidae
(Slither Longbeak)

Order - Aquapumpiformes
(pumpgills)

Family - Aquapumpidae
(basal pumpgills)

Family - Vitricutidae
(Shardscale)

Family - Planktocystidae
(floatpumps)

Order - Rotperetshkiformes
(gillids)

Family - Rotperetshkidae
(basal gillids)

Family - Coelacanthoididae
(sealids)

Family - Xiaoshenyuidae
(Deep Ribbon Gilltail)

Order - Neobranchiouriformes
(Marine Gilltail derivatives)

Family - Neobranchiouridae
(basal derivatives)

Family - Maineipomidae
(Maineiac silltails)

Family - Carnisargidae
(Sandhopper and descendants)

Family - Bitzaqarpiidae
(Gec Gilltail)

Family - Allogregarichthidae
(strainerbeaks)

Family - Oddekidae
(Oddeches)

Order – Passerichthyes
(srugeings and relatives)

Family - Saltosargopteridae
(surge gilltails)

Family - Tumescaeidae
(srugeings)