Fig. 9
From: Halysis Høeg, 1932 — an ancestral tabulate coral from the Ordos Basin, North China
Modes of reproduction in the ‘single-tube’ Halysis. a Longitudinal section of two ‘single-tube’ Halysis showing Y-shaped branching. Note that the daughter tubes have nearly the same diameter as the mother tube; b Two daughter tubes growing at an angle of about 60° and having diameters similar to that of the mother tube; c Two daughter tubes growing at an angle of 90° and showing their arc-shaped terminations; d The daughter tubes have been obscured by recrystallization, and probably are narrower than the mother tube; e The daughter tubes growing at an angle of about 100° are a little narrower than the mother tube; f The diameters of the daughter tubes are almost the same as that of the mother tube