Complex sentence: John S. Clark described "Nothomyrmecia" in 1934 as a new genus of Myrmeciinae, though with some hesitation due to its apparent similarity with the Eocene Baltic amber fossil "Prionomyrmex" which was unknown to him and only remained in literature descriptions and figures.
Split into simpler sentences: John S. Clark described "Nothomyrmecia" in 1934 as a new genus of Myrmeciinae. He did so with some hesitation due to its apparent similarity with the Eocene Baltic amber fossil "Prionomyrmex" which was unknown to him and only remained in literature descriptions and figures.