| 1. | He was a world-renowned expert on coelenterates and elasmobranchs.
|
| 2. | Species in the order consist of intestinal parasites of elasmobranch fishes.
|
| 3. | They were found in coprolites ( fossilised faeces ) from an elasmobranch.
|
| 4. | It also forms the embryonic skeleton and the skeleton of elasmobranch fishes.
|
| 5. | In some elasmobranchs, only the right ovary develops fully.
|
| 6. | Many surviving orders of elasmobranch date back to the Cretaceous, or earlier.
|
| 7. | It is the first rigorous behvioural evidence for colour vision in any elasmobranch.
|
| 8. | Elasmobranchs are ovoviparous, have relatively long gestation period s, and internal fertilization.
|
| 9. | This evolutionary development does not account for the gland in elasmobranchs, suggesting convergent evolution.
|
| 10. | Extant elasmobranchs exhibit several archetypal jaw suspensions : amphistyly, orbitostyly, hyostyly, and euhyostyly.
|
