|
| Torres-Martínez, Miguel A., Villanueva-Olea, Rafael and Sour-Tovar, Francisco Columnar ossicles of Permian crinoids, including two new genera, from the Grupera Formation (Asselian-Sakmarian) of Chiapas, Mexico. Bol. Soc. Geol. Mex, 2020, vol.72, no.2. ISSN 1405-3322
|
|