Thamnophilidae[?]
Furnariidae[?]
Formicariidae[?]
Conopophagidae[?]
Rhinocryptidae[?]
Previous page: Sibley-Monroe checklist 10
Next page: Sibley-Monroe checklist 12
... square[?]. <math>ax^2+bx+c=0</math> Dividing our quadratic equation by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + ...