Fig. 6 Close-ups of selected cervical vertebrae and ribs of Trachelosaurus fischeri. A Anteriormost preserved cervical vertebrae (elements A–C), including the tentatively identified axis and possible atlantal elements. B Cervical ribs with bifurcating distal ends. C Mid-cervical vertebrae (elements L–N). Abbreviations: at, atlantal element; atna, atlantal neural arch; atr, atlantal rib, axc, axis centrum; axna, axis neural arch; cap, capitulum; cv, cervical vertebra; cvr, cervical rib; diap, diapophysis; epp, epipophysis; feap, free-ending anterior process; fs, fish scale; lam, lamina; ns, neural spine; pap, parapophysis; pdp, posterodorsal process; poz, postzygapophysis; prz, prezygapophysis; pvp, posteroventral process; rug, rugosity; tub, tuberculum