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36 Cards in this Set
- Front
- Back
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Eschrictius robustus
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Widely spaced baleen
dorsal hump near tail, followed by knuckles mottled gray color lots of callosities |
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Balaenidae Characteristics
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No dorsal fin
Curved rostrum Neck vertebrae fused & solid 1 offspring per pregnancy Head can compose up to 1/3 of body length |
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Balaena mysticetus
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No dorsal fin
2 blow-holes Large mouth & head Gray-black baleen Longest baleen plates V-shaped blow |
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Eubalaena
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No dorsal fin
2 blow-holes Encrusting callosities on head 90 tons Migrate toward equator in winter |
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Caperea marginata
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Small dorsal fin
Very curved rostrum White ventral surface, dark dorsal surface |
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Balaenopteridae Characteristics
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Numerous throat cleats extending to belly
Distinct dorsal fin Streamlined (long, thin) Straight jawline Fastest of all whales |
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Balaenoptera acutorastrata
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Smallest Baenopteridae species
White stripe on front flipper Very pointed rostrum 50-70 throat cleats extend to behind front flippers Dorsal fin 2/3 back |
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Balaenoptera physalus
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Raised ridge btwn dorsal fin & Fluke
50-100 throat cleats extend to mid-belly 2nd largest whale Triangular dorsal fin 2/3-3/4 way back |
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Balaenoptera borealis
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Prominent sickle-shaped dorsal fin
Dorsal fin 1/2-2/3 way back 20-30 cleats extend to behind flippers Feed at surface w/ mouth open Fastest Balaenoptera |
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Balaenoptera edeni
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Very streamlined
Small, sickle-shaped dorsal fin near tail 3 ridges on top of head 40-70 cleats extend to behind flippers Speckling on posterior ventral area |
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Balaenoptera musculus
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Largest animal on earth
55-80 cleats extend to umbilicus Tiny dorsal fin near tail Head makes up about 1/4 of length |
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Megaptera novaeangliae
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Very long front flipper
Chubbier than rorquals Tubercles on head Small dorsal hump mid-back |
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Odonticeti characteristics
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Homodont dentition
Single blow-hole Most can echo-locate Most are smaller than Mysticeti |
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Physeter macrocephalus
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Blow-hole forward & to the left
Wrinkled dorsal skin Small jaw in relation to head Small eyes Teeth glow green (bacteria) Dorsal hump w/ series of knuckles |
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Kogiidae characteristics
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Body tapered toward fluke
Truncated head Small underslung jaw Fat Resembles shark |
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Kogia breviceps
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Teeth larger in diameter
Teeth longer Dark dorsal, light ventral 10-16 pair of teeth |
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kogia simus
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Larger dorsal fin, trailing edge more curved
Thinner, shorter teeth 7-13 pairs of teeth |
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Ziphioidea characteristics
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Long, narrow beaks
Reduction in # of teeth Slender, gradual taper 1 pair of throat grooves |
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Ziphius cavirostris
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Agressive- scarring
Central knot |
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Mesoplodon europlaeus
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Small flippers
Pronounced beak Small head Teeth visible w/ mouth closed Moveable head |
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Hyperoodon ampullatus & H. planifrons
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No fluke knot
Large forehead No teeth in upper jaw |
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Platanistidea characteristics
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Long snouts
Small Sharp, pointed teeth Short flippers Flexible necks |
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Platanistidae characteristics
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Mostly blind
Swim on their side Square flippers Dorsal hump midway down body |
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P. gangetica gangetica & P. minor
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No eye lens
Cheek pouches Eat fish, insects, fruit |
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Inia geoffrensis
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Shunt blood to surface to cool
Long beak Stiffened hairs on beak Prominent forehead Front teeth round & pointed |
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Lipotes vexillifer
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Steep, sloping forehead
Low, traingular dorsal hump Large, broad flippers |
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Pontoporia blainvillei
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Steep, protruding forehead
Broad, square flippers Small dorsal fin mid-body |
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Delphinoidea characteristics
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Dolphins, porpoises, small whales
Functional teeth in both jaws Single crescent-shaped blowhole Melon |
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Lagenodelphin hosei
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Short snout
Some white on ventral side Multi-colored- purples, grays, pinks |
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S. frontalis
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Darker dorsal, lighter ventral
Spotting |
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S. attenuata
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Smaller front flippers
Black behind jaw to front flippers Lots of spotting |
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S. longirostris
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Longer jaw
Longer beak DF concave toward front White ventral, w/ dividing line on side |
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Stenella coeruleoalba
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Slender, streamlined
More teeth than tursiops Sloping forehead Multi-colored/ spotted |
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Tursiops truncatus
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Spindle-shaped body
Dorsal fin concave on trailing edge Gray-black w/ white ventral 18-26 pairs of teeth |
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Delphinaptera leucas
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Gray as juveniles, white as adults
Circumpolar Neck groove Fat Flexible heads, bodies, lips |
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Monodon monocerous
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1 pair of teeth in upper jaw
males' left tooth spiral up & out Eat fish & shrimp Jousting scars |
