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
Han Chinese subgroups Han Chinese subgroups The sub groups of the Han Chinese people, also known as Sinitic peoples, Chinese dialect groups or just dialect groups, are defined based on linguistic, cultural, genetic, and regional features. The terminology used in Mandarin to describe the groups is: "minxi" ( // "ethnic lineages"), used in Mainland China, or "zuqun" ( //, "ethnic groups"), used in Taiwan. Other than Hui people, which is a classification for Muslims of all backgrounds, no Han subgroup is recognized as one of People's Republic of China's 56 official minority ethnic groups. Mandarin, also known as the Northern dialects, is the