Fig. 12From: Halysis Høeg, 1932 — an ancestral tabulate coral from the Ordos Basin, North ChinaDiameter-measurement comparisons of the Halysis tubes recorded in previous literature (Riding and Braga 2005; Shen and Neuweiler 2015) and studied in this study, together with the Aulopora. Tube diameters recorded as internal diameters in the literature (Munnecke et al. 2001; Frisch et al. 2013) are excludedBack to article page