Lorica composition of modern and fossil Tintinnida (ciliate Protozoa), systematics, geologic distribution, and some new Tertiary taxa
Helen Tappan, and Alfred R. Loeblich
Two superfamilies are proposed for the order Tintinnida: Codonellidea (new) contains the families Tintinnidiidae, Codonellidae, Codonellopsidae, Coxliellidae, and probably Dictyocystidae, Eppiplocylididae, Petalotrichidae. They have a pronounced ciliary membrane and a relatively solidly constructed lorica, commonly with spiral structures, and with agglutinated particles in the wall. Tintinnidea (emended) contains the remaining families, Cyttarocylididae, Ptychocylididae, Rhabdonellidae, Xystonellidae, Undellidae, and Tintinnidae. They lack a ciliary membrane; the lorica is thin, hyaline, and organic without agglutinated particles, and has vertical or transverse, not spiral, structures. Previously proposed superfamily Calpionellidea is not recognized. Two new genera and species of Codonellidae are described from upper Eocene of Mississippi.
This record provided courtesy of AGI/GeoRef.
