Lithornithidae is an extinct, possibly paraphyletic (but see below) group of early paleognath birds. They are known from fossils dating to the Upper Paleocene...

reconsidered a distant relative of the ostrich and is now in the ratite family Lithornithidae. Filholornis from the Late Eocene or Early Oligocene of France is occasionally...

it was moved to Lithornis hookeri. L. hookeri is the smallest of the Lithornithidae. W. George collected the original fossil in the Division A London Clay...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

Mayr, Gerald (2008). "First substantial Middle Eocene record of the Lithornithidae (Aves): A postcranial skeleton from Messel (Germany)". Annales de Paléontologie...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

Class: Aves Infraclass: Palaeognathae Order: †Lithornithiformes Family: †Lithornithidae Genus: †Pseudocrypturus (Houde, 1988) Species †Pseudocrypturus cercanaxius...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

Family Genus Species Member Abundance Notes Image †Lithornithidae †Calciavis †C. grandei Fossil Lake A lithornithid. †Pseudocrypturus †P. cercanaxius Fossil...

(1988) included it as a member of the order Lithornithiformes and family Lithornithidae. The holotype specimen is in the collection of the Royal Ontario Museum...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Pachyornis geranoides (Owen 1848) Worthy 2005 (Mantell's moa) Family †Lithornithidae Houde 1988 (false tinamous) Genus †Calciavis Nesbitt & Clarke 2016 (early...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...

†Asteriornis? †Eremopezus? †Limenavis? †Lithornithidae Calciavis Fissuravis Lithornis Paracathartes Pseudocrypturus...