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Propeptide Comparisons. The vertebrates that possess all four propeptides span the groups of Actinopterygians (ray-finned fishes) and Sarcopterygians (flesh- or lobe-finned fishes) (Fig. 3). Among Chondrichthyes (sharks, rays, and chimaeras), it has so far been possible to identify proenkephalin, prodynorphin and POMC.Types of Fish:
Sharks and ray-finned fishes are both types of chordates (phylum Chordata). Sharks belong to class Chondrichthyes, which are those fish that have skeletons made of cartilage. Ray-finned fishes are bony fish, belonging to class Osteichthyes.The sharks, rays, and chimaeras make up the second group of fish, the Class Chondrichthyes. Sharks are one of the earliest known jawed fishes.
Are sharks ray-finned?
Types of Fish:
Sharks and ray-finned fishes are both types of chordates (phylum Chordata). Sharks belong to class Chondrichthyes, which are those fish that have skeletons made of cartilage. Ray-finned fishes are bony fish, belonging to class Osteichthyes.
Are sharks and ray-finned fish in the same class?
The sharks, rays, and chimaeras make up the second group of fish, the Class Chondrichthyes. Sharks are one of the earliest known jawed fishes.
Images related to the topicActinopterygii Sarcopterygii
Which one is an example of a ray-finned fish?
The ray-finned fishes include some of the most well-known fish, including tuna, cod, lionfish, and even seahorses.
Are ray-finned fishes lobe-finned?
Fish and Shellfish
The lobe-finned fishes are the sister group to the ray-finned fishes. They are characterized by their paired, fleshy pectoral, and pelvic fins that are each articulated via a single bone.
Are sharks and rays fish?
Rays, skates, and sharks all belong to the class Chondrichthyes (Greek, chondro meaning cartilage and ichthosmeaning fish).
Are rays a type of shark?
|Batoidea Temporal range:|
Do sharks have lobed fins?
The shark’s tail is a two-lobed caudal fin that provides propulsion and thrust. The size and shape of the caudal fin are dependent on the shark’s primary habitat and hunting technique.
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Actinopterygii: More on Morphology
Teleost fish — the majority of ray-finned fishes — have upper jaw bones (the … lobe of the tail fin, like the tail fins of sharks and their allies.
Cartilaginous fish include sharks, rays, skates and chimaeras (ghost sharks). Bony fish (also known as Ray-finned fish) are the largest of the three groups …
Class Actinopterygii – Ray-finned Fishes – Untamed Science
The ray-finned fishes (actinopterygians) are the largest group of living … In other groups, like the the sharks, the upper lobe of the tail is often …
Fish Groups – Florida Museum of Natural History
The sharks, rays, and chimaeras make up the second group of fish, … Claspers are located on the inner edge of the anal fins near the …
How are sharks classified?
Sharks belong to the Class Chondrichthyes. This includes all fish that have a skeleton made of cartilage. They’re further divided into two Sub-classes. Elasmobranchii (sharks, skates and rays) and Holocephali (chimaera).
Are sharks Aganthan fish or Gnathostomes?
Are sharks aganthan fish or gnathostomes? Why? Gnathostomes because they have jaws.
What feature S separates a shark from a ray-finned fish?
Rays and skates comprise more than 500 species. They are closely related to sharks but can be distinguished from sharks by their flattened bodies, pectoral fins that are enlarged and fused to the head, and gill slits on their ventral surface ((Figure)). Like sharks, rays and skates have a cartilaginous skeleton.
What is the difference between lobe and ray-finned fish?
Answer. ❏The ray-finned fish have fin rays, with fins supported by bony spines known as rays. The lobe-finned fish are characterized by fleshy lobed fins, as opposed to the bony fins of the ray-finned fish. There are two types of living lobe-finned fish: the coelacanths and the lungfish.
SARCOPTERYGII FISH : Size Comparison and Data (The so call \”Lobe-finned fish\”)
Images related to the topicSARCOPTERYGII FISH : Size Comparison and Data (The so call \”Lobe-finned fish\”)
Is salmon a ray-finned fish?
The comparative genetic analysis of more than 200 fish species, reported the week of Aug. 6 in the Proceedings of the National Academy of Sciences, gave an earlier than expected evolutionary birthday to well-known teleost — or ray-finned — fish such as salmon, bass, or tuna.
Which of the following is a lobe-finned fish?
The Sarcopterygii, or lobe-finned fishes, is a clade containing the coelacanths, lungfishes, tetrapods, and their fossil relatives, including the osteolepiformes and panderichthyids. They are the sister group to the ray-finned fishes (Actinopterygii), together forming the bony fishes (Osteichthyes).
What is a ray fin?
Ray-fins and lobe-fins (Sarcopterygii) are the two known lineages of bony fishes (Osteichthyes). They share a number of important features including the possession of a swim bladder (or lung) and paired pectoral (shoulder) and pelvic fins. One important difference between these groups is found in these paired fins.
Which group is most closely related to the ray-finned fish?
Terms in this set (5) The Amphibians are closer in relations to the Primates than the Ray-Finned. Are the Amphibians more closely related to the Primates or Ray-Finned Fish? Yes, the Testudines are closer in relations to the Lepidosauria.
Are sharks related to rays?
Stingrays and sharks are very closely related. Both are elasmobranchs, a subclass of fishes with cartilaginous skeletons, and five to seven gill slits. Beyond these similarities, both classes of fish inspire a certain sense of awe – that often has more to do with myth than fact.
How do sharks differ from rays?
Obviously, the major difference between sharks and rays is their body shape. And in addition to the flattened body, the pectoral fins of rays are larger compared to those of sharks, and they are fused to the head, resulting in the unique body shape and swimming movements of rays.
When did sharks and rays split?
Cartilaginous fish, which today include sharks, rays, and ratfish, diverged from the bony fishes more than 420 million years ago.
How are sharks and rays similar and different?
Though some sharks have long, flatter bodies, the bodies of rays are really flattened. They have disc-like, circular shaped bodies with very large connected pectoral fins. Rays also have long skinny tails at the ends of their bodies and tend to be much smaller than most sharks.
What is the study of sharks and rays called?
Choosing a career in ichthyology means deciding to study fishes, sharks, rays, sawfish, and more.
What fins do sharks have?
Most sharks are designed for efficient motion through the water. They have three types of median fins (dorsal, anal, and caudal) and two sets of paired fins (pelvic and pectoral).
Ask Our Experts – Why do sharks have fins?
Images related to the topicAsk Our Experts – Why do sharks have fins?
Do sharks have Homocercal tails?
The heterocercal tail of a shark is a caudal fin with unequal lobes. A heterocercal tail is a caudal fin composed of two asymmetrical lobes. Often, such as the case in many sharks, the vertebral column passes through the upper lobe, making it the larger of the two lobes.
What is a sharks tail called?
Shark tail fins, also called the caudal fins, are unique among all fishes. If you look at the top half of the fin, it is noticeably longer than the bottom half. This asymmetrical profile was common in many ancient fishes, but sharks are the only group to maintain the shape over a period of 350 million years.
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