Questions and Answers
What is the kingdom of modern classification of sharks, skates, and rays?
What class do sharks belong to?
Chondrichthyes
The family classification of sharks consists of ____ families.
57
What is the order of dogfish sharks?
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Which of the following orders includes angel sharks?
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How many families are there in the order Hexanchiformes?
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What feature is characteristic of the order Lamniformes?
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Which superorder includes the order Carcharhiniformes?
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The order Pristiophoriformes is known for ____.
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How many genera and families are present in the order Myliobatiformes?
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The snout of carpet sharks is saw-like.
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Match the following orders with their respective classifications:
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How many species are there approximately in the modern classification of sharks?
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Study Notes
Sharks Taxonomy Overview
- Modern classification includes Kingdom: Animalia, Phylum: Chordata, Subphylum: Vertebrata, Class: Chondrichthyes, and Subclass: Elasmobranchii.
- Superorder comprises 4 distinct orders, while the overall classification has 13 orders, 57 families, 174 genera, and approximately 1050 species.
Orders of Sharks
- Hexanchiformes: Cow and frilled sharks; characterized by a single dorsal fin without spine and six to seven gill slits; includes four families and five species.
- Squaliformes: Dogfish sharks; notable for two dorsal fins, usually with spines and presence of spiracles; seven families and 98 species exist.
- Pristiophoriformes: Sawsharks; recognized by a flattened, saw-like rostrum featuring rostral teeth and barbels; one family with five species.
- Squantiniformes: Angel sharks; have dorsoventrally flattened bodies and hypocercal caudal fins; one family with 15 species.
- Heterodontiformes: Bullhead sharks; defined by two dorsal fins with spines and an anal fin; one family with eight species.
- Orectolobiformes: Carpet sharks; lack a saw-like snout and have barbels present; seven families, 31 species.
- Lamniformes: Mackerel sharks; distinguished by two dorsal fins without spines and the absence of nicitating eyelids; seven families, 16 species.
- Carcharhiniformes: Ground sharks; characterized by two dorsal fins without spines and presence of nictitating eyelids; eight families, 216 species.
Orders of Batoids
- Pristiformes: Sawfishes; recognized by a flattened, saw-like rostrum without barbels and ventral gill slits; one family, seven species.
- Rhinobatiformes: Guitarfishes; marked by two large dorsal fins and a muscular precaudal tail; one family, five species.
- Torpediniformes: Electric rays; have a dorsoventrally flattened body and paired electric organs; four families, 55 species.
- Rajiformes: Skates; characterized by small to absent caudal fins, oviparous reproduction, and pelvic fins with two lobes; three families, 235 species.
- Myliobatiformes: Stingrays; lack rostral cartilage and exhibit aplacental viviparous reproduction; nine families, 179 species.
Superorder Classification
- Squalomorphii: Encompasses Hexanchiformes, Squaliformes, and Pristiophoriformes.
- Squantinomorphii: Includes Squantiniformes.
- Galeomorphii: Comprises Heterodontiformes, Orectolobiformes, Lamniformes, and Carcharhiniformes.
- Rajomorphii: Contains Pristiformes, Rhinobatiformes, Torpediniformes, Rajiformes, and Myliobatiformes.
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Description
Explore the modern classification system of sharks, skates, and rays through engaging flashcards. This quiz covers the hierarchy from kingdom to species, detailing the intricate taxonomy of these fascinating cartilaginous fishes. Perfect for students and enthusiasts of marine biology!
