Lab #1 Groups Flashcards
Hagfish
Myxiniformes
Pacific Hagfish
Lamprey
Petromyzontiformes
Pacific Lamprey
Cow Shark
Hexanchiformes
Bluntnose Sixgill Shark
Mackeral Sharks
Lamniformes
Salmon Shark
Great White Shark
Basking Shark
Common Thresher Shark
Requiem Sharks
Carcharhiniformes
Grey Reef Shark
Dogfish Sharks
Squaliformes
Spiny Dogfish
Skates
Rajiformes
Big Skate
Longnose Skate
Electric Rays
Torpediniformes
Pacific Electric Ray
Mantas
Myliobatiformes
Reef Manta
Chimaeras
Chimaeriformes
Spotted Ratfish
Myxiniformes Traits
Sensory barbels
single nostril opens into the mouth
Rudimentary eye
one semicircular canal
no paired fins, no dorsal or anal fin
Mucous pores
no larvae
scaleless and jawless
pre anal fin
no lateral line
Petromyzintiformes Traits
Filter feeding larvae (ammocoetes)
Prominent eyes
7 gill pores
Sucking disk
No paired fins
Dorsal fin present
jawless
2 semicircular canals
nostril not into pharynx
Hexanchiformes Traits
Six gills slits
no spots
single dorsal fin
as large as 5m
Bluntnose Sixgill shark
Lamniformes Traits (Salmon shark)
Dark blotching on the ventral surface
small 2nd dorsal and anal fins
Secondary keel is below main keel
Lamniformes Traits (White Shark)
Heavy set, triangular serrated teeth
Blunt conical snout
well-developed dorsal fin
strong keel (no 2nd keel)
ventral body is white
Lamniformes Traits (Basking Shark)
large mouth, gill rakers
long gill slits
strong keel
second largest
Lamniformes Traits (Common Thresher shark)
long upper tail lobe (equal to body length)
dorsal fin well in front of the pelvic fin
Small second dorsal and anal fins difficult
Conical snout
Carchariniformes Traits (Grey Reef Shark)
long rounded snout
dorsal fin over or just in front pectoral fins
large second dorsal fin with short rear tip
black band on posterior of caudal fin
grey above white below
Sqauliformes Traits (Spiny Dogfish)
Spine in front of each dorsal fin
no anal fins no keels
five gill slits
luminescent dots
Rajiformes Traits (Big Skate)
Diamond shape, stiff snout
small eyes
prominent ring spot on pectoral fins
pectoral fins are concave
row of spines extends from tail to body
Rajiformes Traits (Longnose Skate)
The anterior margin is strongly concave
Stiff and long snout
small eyes
plain eye spot on pectoral fins
notched pelvic fins into two lobes
row of spines mostly on tail
Torpediniformes Traits (Electric Rays)
dark gray body coloration, distinct spots
pectoral fins rounded
thick tail with 2 dorsal fins of unequal size
caudal fin is well developed
Myliobatiformes Traits (Reef Manta)
Dark brown, grayish blue
large triangular pectoral fins and projecting cephalic fins
Pectoral fins rounded, mouth is terminal
eyes are lateral, gills ventral, no tail spines
