He only had access to preserved specimens so his suggestion that " Polypterus " and " Calamichthys " belonged to " Crossopterygii " was only a theory.
32.
Some regarded " Polypterus " as a living fossil, part of the missing link between fishes and amphibians, helping to show how fish fins had evolved to become paired limbs.
33.
Some freshwater species ( and the blacktip shark, a marine species ) are hardy enough or survive better in brackish water, such as " Polypterus bichir ", certain gobies.
34.
Dr Ansorge had brought back " Polypterus " larvae from the Niger delta and Budgett thought that if he went there he might finally be able to observe the development of these larvae.
35.
The "'Saddled Bichir "', " Polypterus endlicheri endlicheri ", is a prototypical species of the Polypterus genus, meaning most of its features are held across the genus.
36.
The "'Saddled Bichir "', " Polypterus endlicheri endlicheri ", is a prototypical species of the Polypterus genus, meaning most of its features are held across the genus.
37.
Drawing on this work, in 1907, British Association the then current state of evidence'against "'Polypterus " being a crossopterygian, placing it within the palaeoniscids, the most primitive actinopterygians.
38.
The "'Guinean bichir "'( " Polypterus ansorgii " ) is a bony fish from rivers and other freshwater habitats in Western Africa, ranging from Guinea-Bissau to Nigeria.
39.
The "'West African bichir "'( " Polypterus retropinnis " ) a fish in the family Polypteridae, is found in the central Congo River basin and Ogoou?River in Africa.
40.
"' Polypterus teugelsi "'( also known as the "'Teugelsi bichir "') is a species of IUCN does not have enough data to evaluate the condition of this species.
