La Huérguina Formation environment which presents an important aquatic and terrestrial flora (with many specimens of Charophytes, Montsechia, Weischelia or Frenelopsis) and diverse fauna, with specimens of at least five or six Phyla: Arthropods, Molluscs, Chordata and many vermiform soft bodied animals which might be Nemertines or Annelids. Among vertebrates the most abundant and diverse group are fish. The presence of mostly articulated skeletons, exceptional preservation of tissue and lack of any other signs of transportation may indicate that these are demic and autochthonous entities (meaning that they lived and died in the same place where they fossilized). Crocodylomorphs are the most abundant
Subgroups of Amish affiliation as "a cluster of two or more districts with at least twenty years of shared history". They continue: "affiliated congregations share similar Ordnungs, which specify distinctive lifestyles and visible symbols that set them apart from other affiliations". When referring to affiliations Amish themselves speak of "our people" ("unser Leit") and "our way" to do things. By 2012 there were more than 40 affiliations, with smaller subgroups within some affiliations counted, there were more than 65. In addition to that, there were more than 130 fairly independent congregations. The majority of affiliations reflects mainly the different local "Ordnungen" (Orders) in