Cielo Cedillo-Avila. Museo de Historia Natural, Universidad Autónoma de Baja California Sur, Boulevard Forjadores S/N between Street Av. Universidad and Street Félix Agramont Cota Col. Universitario, La Paz, Baja California Sur, 23080 México. cielo.96.cedillo@gmail.com

Cielo Cedillo Avila graduated with a degree in marine biology from the Universidad Autónoma de Baja California Sur, La Paz, Mexico. She conducted her thesis describing the first eomysticetid from the San Gregorio Formation, which is an important finding for expanding the distribution and knowledge of this family in the Northern Hemisphere. Cielo has an interest in evolutionary and morphological changes in cetaceans, and she is also drawn to science communication and fossil preparation.

Gerardo González-Barba. Museo de Historia Natural, Universidad Autónoma de Baja California Sur, Boulevard Forjadores S/N between Street Av. Universidad and Street Félix Agramont Cota Col. Universitario, La Paz, Baja California Sur, 23080 México. gerardo@uabcs.mx

Dr. Gerardo González Barba is a research professor at the Autonomous University of Baja California Sur, La Paz, Mexico. Since 1985, he has dedicated himself to the study of Cenozoic fossils throughout the Baja California Peninsula. His work primarily focuses on the identification of fossil elasmobranchs from a time interval ranging from the Cretaceous to the present. He has also collaborated with various research groups around the world. Additionally, he has trained and collected dozens of fossils that make up the reference collections of the states of Baja California Sur and Baja California, Mexico, located in La Paz at the Autonomous University of Baja California Sur and in Ensenada at the Autonomous University of Baja California. During the collection of these materials, he has recorded a significant number of marine mammals, elasmobranchs, bony fish, invertebrates, wood, seabirds, and terrestrial megafauna. These records have facilitated the development of various thesis projects with undergraduate and graduate students, as well as publications on the paleontological heritage of the Baja California Peninsula.

Azucena Solis-Añorve. Museo de Historia Natural and Posgrado of Ciencias Marinas and Costeras (CIMACO), Universidad Autónoma de Baja California Sur, Boulevard Forjadores S/N between Street Av. Universidad and Street Félix Agramont Cota Col. Universitario, La Paz, Baja California Sur, 23080 México. Corresponding author. ca.solis@uabcs.mx 

Azucena Solis Añorve is a marine biologist who graduated from the Autonomous University of Baja California Sur, La Paz, Mexico. She has worked with fossil cetaceans, primarily mysticetes from the Oligocene and Miocene epochs in Baja California Sur, Mexico. Currently, she serves as a research professor at the same institution and is a doctoral candidate in sciences. Additionally, she has ventured into techniques for the preparation and preservation of invertebrate and vertebrate fossils and has actively participated in scientific outreach initiatives. She is currently the representative for the northwest region of the Paleontological Society of Mexico (SOMEXPAL).