Reply to Jenchen, U.: Comment to Hernandez-Ocana, Maria I., Chacon-Baca, Elizabeth, Quiroz-Barroso, Sara A., Eguiluz-de Antunano, Samuel, Torres-de la Cruz, Felipe, and Chavez-Cabello, Gabriel (2019): A Paleogene ichnological record from the Wilcox Formation: Ophiomorpha and Venericardia (Venericor) zapatai ain the Burgos Basin, northern Mexico

The Jenchen's comment appears to assume that Venericardia and Ophiomorpha were the main objectives in our work and that we used random criteria to assign genera. However our paper addressed the presence of previously reported V. and Oph. from new localities rather than a taxonomic determination. Our descriptions of shells are based on the separate evaluation of observed macroscopic and microscopic features for taphonomic rather than taxonomic purposes. Based on this erroneous assumption, Jenchen disproves our methodology and data processing. Since Jenchen statements (ten remarks) are reiterative and redundant, we have simplified them and focus on the four main points: geological setting (three remarks), presentation of studied section (one remark), Ophiomorpha isp. (two remarks), and Venericardia (Venericor) zapatai (three remarks). In the following lines well argue why most of these comments lack robust scientific support and are rather suggestions on how our results should be worked, interpreted and presented. We expect to answer every remark. Due to the redundancy of his 3rd and 4th points, we simplified our clarifications in the same order. Since there seems to be a mistaken assumption in some of the commentaries embodied in the 2nd and 3rd sections of Jenchen's comment, the 5th section turns out to be invalid. We conclude answering his remarks concerning our treatment of data from sections 6th and 7th, and include some recommendations as well.