Eurypygidae[?]
Otididae[?]
Gruidae
Aramidae
Heliornithidae
Psophiidae
Cariamidae[?]
Rhynochetidae[?]
Rallidae[?]
Mesitornithidae[?]
Pteroclidae[?]
Thinocoridae[?]
Pedionomidae
Scolopacidae
Rostratulidae
Jacanidae
Previous page: Sibley-Monroe checklist 6
Next page: Sibley-Monroe checklist 8
... called the roots of the equation. The formula reads <math> x=\frac{-b \pm \sqrt {b^2-4ac}}{2a} </math> The term b2 – 4ac is called the ...