Annu. Rev. Earth Planet. Sci. /994.22:4/9-55 Copyright © 1994 by Annual Reviews Inc. All rights reserved THE EVOLUTIONARY HISTORY OF WHALES AND DOLPHINS R. Ewan Fordyce…

1. Mammals BEENISH SARFRAZ,GROUP 8 1 2. Evolution and Characteristics belong to theclass Mammalia, whichincludes 4000 species•Most dominant land animalson earth.•Mammals…

1. Cetaceans By: Abby Paul 2. Table of Contents • Types of Cetaceans– Odontoceti (toothed whales)– Mysticeti (mustached or baleen whales)– Quiz • General Information–…

Slide 1 Slide 2 2 Families Odontoceti (toothed whales) 67 species One opening for blowhole Mysticeti (baleen whales) 11 species Two openings for blowhole Slide 3 Teeth Toothed…

Slide 1 Whales, Dolphins and Porpoises Whales, dolphins and porpoises are cetaceans (Class Mammalia, Order Cetacea) Of all the marine mammals, cetaceans (and sirenians) have…

The Marine Ecosystem Ocean Overview Oceans cover three quarters of the Earth's surface, and they are as diverse as they are large. The ocean is a complicated ecosystem,…

The colossal Squid (Mesonychoteuthis hamiltoni) The colossal Squid (Mesonychoteuthis hamiltoni) The colossal squid (Mesonychoteuthis hamiltoni, from Greek mesos (middle),…

Feeding and Echolocation in Whales By Robbie Bodnar Feeding Strategy Toothed whales use echolocation for hunting their prey Baleen whales use baleen plates to obtain huge…