World problems

Title
Extinct species of Heterocorallia
Threatened species of Zoanthiniaria
Threatened species of Corallimorpharia
Threatened species of Notaspidea
Threatened species of Thecosomata
Threatened species of Aplysiomorpha
Threatened species of Cephalaspidea
Threatened species of Holocephali
Threatened species of Sporozoea
Threatened species of Gregarinia
Threatened species of Tinamiformes
Threatened species of Psittaciformes
Extinct species of Cathayornithiformes
Extinct species of Patagopterygiformes
Threatened species of Procellariiformes
Extinct species of Pterosauria
Threatened species of Rubiales
Threatened species of Calycerales
Threatened species of Plantaginales
Threatened species of Torpediniformes
Threatened species of Prostomatida
Threatened species of Capparales
Threatened species of Ceratobasidiales
Threatened species of Salicales
Threatened species of Primulales