Myrmecioptychium is an extinct lychniscosidan hexasterophoran sea sponge, which is a subgenus of Coeloptychium.R. M. Finks, R. E. H. Reid, and J. K. Rigby. 2004. Porifera (Demospongea, Hexactinellida, Heteractinida, Calcarea). Treatise on Invertebrate Paleontology Part E, Revised E(3):1-872 [W. Kiessling/W. Kiessling/W. Kiessling] Its remains have been found in Santonian-Maastrichtian-aged deposits in Broitzem, Germany and Poland. The type species, Coeloptychium bodei, was named in 1912.A. Schrammen. 1912. Die Kieselspongien der oberen Kreide von Nordwestdeutschland, Teil 2 Triaxonia (Hexactinellida) [Upper Cretaceous sponges from north-western Germany, part 2 Triaxonia (Hexactinellida)]. Palaeontographica, Supplement 5:176-385
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