Fig. 6 in The most complete amiid fish from the Coal Creek Member of the Eocene Kishenehn Formation in northwestern Montana

Fig. 6. Amiid fish Amia sp., USNM 618000, from the Spring Site, Montana, USA; the Kishenehn Formation's Coal Creek Member, 43.5 Ma (Eocene). Tail in left-lateral view; three-dimensional threshold model (A1), explanatory drawing with labeled elements (A2). Vertebral centra 61–68 are represented as impressions in the shale (see SOM: fig. S3). Abbreviations: ep, epurals; epx, epaxial; ha, haemal arch; hpx, hypaxial; hs, haemal spines; hyp1, hyp2, hypurals 1, 2; ihm, infrahaemal; na, neural arches; nsap, anterior process of neural spine; u1, u8, ural centra 1, 8.