Acantholipan

Acantholipan is a genus of herbivorous nodosaurid dinosaur from Mexico from the early Santonian age of the Late Cretaceous. It includes one species, Acantholipan gonzalezi.
Discovery and naming.
In the north of Mexico, fragmentary fossils have been found of nodosaurids. A partial skeleton excavated at Los Primos near San Miguel in Coahuila, was described in 2011. When Rivera-Sylva and colleagues reported the discovery of this specimen, CPC 272, they initially considered it too fragmentary to name. Later it was judged that the remains were sufficiently distinct to be given a binomial name.
In 2018, the type species "Acantholipan gonzalezi" was named by Héctor Eduardo Rivera-Sylva, Eberhard Frey, Wolfgang Stinnesbeck, Gerardo Carbot-Chanona, Iván Erick Sanchez-Uribe and José Rubén Guzmán-Gutiárrez. The generic name combines a Greek "akanthos", "spine", with "lipan", the usual Spanish designation of the "Lépai-Ndé", the "Gray People", a tribe of the Apache inhabiting the area of the find. The specific name honours the Mexican paleontologist Arturo Homero González-González, the chairman of the "Museo del Desierto" at Saltillo. "Acantholipan" is the first ankylosaurian species named from Mexico.
The holotype specimen, CPC 272, was found in a marine layer of the Pen Formation and dates from the Santonian. It consists of partial skeleton lacking the skull. Its remains include a back vertebra, a tail vertebra, a piece of a rib, the underside of the left humerus, an upper left ulna, the underside of the left femur and a spike-like osteoderm probably from the posterior thorax. The fossil is part of the "Colección Paleontológica de Coahuila, Museo del Desierto, Saltillo".