| Title |
Fig. 6. Proposed phylogenetic relationships of ammonoids of the genus Churkites. Abbreviations: Geochron. scale – geochronological scale; lower part – lower part; M. millar. – Meekoceras millardense; M. aff. ol. – Meekoceras aff. oliveri; A. rubyae – Arctoceras rubyae; M. gracil. – Meekoceras gracilitatis; O. k. – Owenites koeneni; A. w. – Aspenites weitschati; G. l. – Galfettites lucasi; Pr. t. – Preflorianites toulai; Cr. j. –Crittendenites jattioti. Key: 1 – Arctoceras tuberculatum; 2 – Churkites noblei; 3 – Ch. warei; 4 – Ch. egregius; 5 – Ch. syaskoi; 6 – Ch. cf. syaskoi; 7 – Ch. subungunensis sp. nov.; 8 – Ch. ungunensis; * – according to Zakharov et al., 2016. Length of scale bar is 20 cm. |