Chondrichthyes phylogeny

Question 1

Holocephali

Answer 1

Chimeras

Question 2

Elasmobranchii (Euselachii)

Answer 2

Sharks, skates, & rays

Question 3

Selachimorpha

Answer 3

Sharks

Question 4

Batoidea

Answer 4

Skates & rays

Question 5

Charcharhiniformes

Answer 5

Requiem sharks

(e.g., hammerhead sharks, catsharks, tiger sharks, etc.)

High morphological/ecological diversity

Question 6

Heterodontiformes

Answer 6

Bullhead sharks

Question 7

Hexanchiformes

Answer 7

Includes frilled, sixgill, & sevengill sharks

Question 8

Lamniformes

Answer 8

Makeral sharks

(e.g., great white, thresher, and megamouth sharks, etc.)

Question 9

Orectolobiformes

Answer 9

Carpet sharks

(e.g., Wobbegong)

Question 10

Pristiophoriformes

(Selachimorpha)

Answer 10

Sawsharks

Question 11

Squaliformes

Answer 11

Dogfishes

(e.g., Pacific spiny dogfish)

Question 12

Squantiniformes

Answer 12

Angel sharks

Question 13

Rajiformes

Answer 13

Skates

Question 14

Rhinopristiformes

Answer 14

Sawfishes, guitarfishes, thornback rays, etc.

Question 15

Torpediniformes

Answer 15

Torpedo rays

Question 16

Myliobatiformes

Answer 16

Manta rays, eagle rays, cownose rays, & stingrays

Question 17

What are the four orders that are included under this superorder?

Galeomorphii

Answer 17

Carcharhiniformes
Lamniformes
Orectolobiformes
Heterodontiformes

Question 18

What orders are included under this superorder?

Squalimorphii

Answer 18

Hexanchiformes
Echinorhiniformes
Squaliformes
Squatiniformes
Pristiophoriformes

Question 19

List two families in the order:

Charcarhiniformes

Answer 19

Charcarhinidae (requiem sharks),
Sphyrnidae (hammerhead sharks)

Question 20

Example of a species (common name) in the family:

Charcarhinidae

(requiem sharks)

Answer 20

Bull shark

Question 21

Example species (common name) in the family:

Sphyrnidae

(hammerhead sharks)

Answer 21

Great hammerhead

Question 22

List two families in the order:

Lamniformes

Answer 22

Lamnidae,
Alopiidae (thresher sharks)

Question 23

Example species (common name) in the family:

Lamnidae

Answer 23

Great white shark

Question 24

Example species (common name) in the family:

Alopiidae

(thresher sharks)

Answer 24

Bigeye thresher

Question 25

# What is the only family in the order: Heterodontiformes

Answer 25

Heterodontidae | (Bullhead sharks)

Question 26

# Example species (common name) in the family: Heterodontidae | (Bullhead sharks)

Answer 26

Horn shark

Question 27

# List two families in this order: Hexanchiformes

Answer 27

Chlamydoselachidae, Hexanchidae

Question 28

# Example species (common name) in the family: Chlamydoselahidae

Answer 28

Frilled shark

Question 29

# Example species (common name) in the family: Hexanchidae

Answer 29

Bluntnose sixgill shark

Question 30

# What is the only family in the order: Echinorhiniformes

Answer 30

Echinorhinidae

Question 31

# Example species (common name) in the family: Echinorhinidae

Answer 31

Bramble shark

Question 32

# What are the orders (five) included under this superorder? Batoidea

Answer 32

Pristiformes Rhinobatiformes Rajiformes Torpediniformes Myliobatiformes