World problems

Title
Extinct species of Palaeodictyoptera
Threatened species of Protura
Threatened species of Diplura
Extinct species of Glosselytrodea
Threatened species of Raphidioptera
Extinct species of Diaphanopterodea
Threatened species of Polyhymenophorea
Threatened species of Oligotrichida
Extinct species of Palaeostomatopoda
Threatened species of Athalamida
Extinct species of Pyrotheria
Extinct species of Sauropodomorpha
Extinct species of Dinocerata
Threatened species of Dermoptera
Extinct species of Fordilloida
Threatened species of Cephalochordata
Threatened species of Amoebida
Threatened species of Stomatopoda
Extinct species of Helodontiformes
Extinct species of Psammodontiformes
Extinct species of Myriacanthiformes
Extinct species of Chondrenchelyiformes
Extinct species of Mesonychia
Extinct species of Creodonta
Extinct species of Sauropterygia