Fig. 3 in The oldest three-dimensionally preserved vertebrate neurocranium

Fig. 3 | The neurocrania of vertebrates in a phylogenetic framework. a, Haikouichthys, adapted from ref.3, CC-BY 4.0. b, Petromyzon. c, Generalized cyathaspid, adapted from ref.20, Springer Nature.d, Sacabambaspis, reproduced from ref.31, copyright ©1993 Elsevier Masson SAS, all rights reserved (but see ref. 53 for alternative interpretation).e, Eriptychius. f, Shuyu, adapted from ref.7, Springer Nature.g, Dicksonosteus adapted with permission from ref. 14,Muséum national d'histoire naturelle,Paris. Phylogenetic scheme is the Adams consensus tree described in the text, bold taxon names represent those depicted above.Coloured regions illustrate positions of key sensory organs:yellow,eyes; blue, pineal. Light grey lines represent body outlines,black lines represent dermal body armour, light grey regions with dark grey borders represent cranial mineralizations, brown regions represent the brain (b), imprints of the brain in the dorsal headshield (c) or the endocast (f,g). Square brackets represent the preorbital part of the head. Petromyzon redrawn from Sketchfab (https://sketchfab.com/ 3d-models/lamprey-inside-c9f05e3f00c94d929e7ed018fac6d782) under a CC BY 4.0 licence.Abbreviations:CG, crown group;mand. gnath.,mandibulate gnathostomes; TG, total group. *'Crown-group cyclostomes' represents the Petromyzontidae and Myxinoidea total groups and Gilpichthys, which was recovered in a polytomy with those two groups.**Cyclostome and gnathostome total groups in this topology recovered in a polytomy with Metaspriggina and (Haikouichthys + Myllokunmingia).