Complexastrea d’Orbigny, 1850b

Baron-Szabo, Rosemarie Christine, Tschanz, Karl & KÜrsteiner, Peter, 2022, Scleractinian corals from the Lower Cretaceous of the Alpstein area (Anthozoa; Vitznau Marl; lower Valanginian) and a preliminary comparison with contemporaneous coral assemblages, Swiss Journal of Palaeontology (3) 141 (1), pp. 1-61 : 21

Genus Complexastrea d’Orbigny, 1850b

Type species. Complexastrea subburgundiae d’Orbigny, 1850b , Jurassic (‘Corallien’) of France .

Diagnosis. Colonial, often massive to subhemispherical, subbranching to subflabellate during various stages of astogeny, present or absent. Polyp integration astreoid, plocoid to cerio-plocoid; submeandroid to thamnasterioid integration during various stages of astogeny present or absent. Budding intracalicular and extracalicular. Costosepta compact, non-confluent to confluent, granulated and carinate laterally. Teir axial ends can be rhopaloid. Columella absent or formed by weakly parietal structures. No pali. Synapticulae absent. Intertrabecular distance ranging between 200 and 1300 µm. Endothecal dissepiments pass from one corallite to the next, they are vesicular, cellular, or tabuloid. Wall absent or paraseptothecal.