Information about Hyperoartia
| hyperoartians Fossil range: Devonian - Recent | ||||||
|---|---|---|---|---|---|---|
) Sea lamprey from Sweden Sea lamprey from Sweden | ||||||
| Scientific classification | ||||||
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| subgroups | ||||||
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Jamoytius Endeiolepis Euphanerops Petromyzontiformes (lampreys) | ||||||
Hyperoartia is a group of jawless fishes that includes the modern lampreys and their fossil relatives. Example of hyperoartian from early in their fossil record are Endeiolepis and Euphanerops, fishes with hypocercal tails that lived during the Late Devonian Period. Some paleontologists still classify these forms among the jawless armored fishes.
The only hyperoartians surviving today are lampreys, classified in the Petromyzontiformes. The discovery of the fossil Priscomyzon, pushed back the oldest known occurrence of true lampreys to the Late Devonian. The evidence of phylogeny, however, suggests that the lamprey lineage diverged much earlier from other vertebrates, rather than arising from ostracoderm fishes. The origin of Hyperoartia may therefore extend back to the early Paleozoic, if not earlier.
Devonian is a geologic period of the Paleozoic era spanning from roughly 416 to 359 million years ago. It is named after Devon, England, where rocks from this period were first studied.
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Petromyzon
Species: P. marinus
Binomial name
Petromyzon marinus
(Linnaeus, 1758)
The sea lamprey (Petromyzon marinus
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Species: P. marinus
Binomial name
Petromyzon marinus
(Linnaeus, 1758)
The sea lamprey (Petromyzon marinus
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Chordata
Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Bateson, 1885
Typical Classes
See below
Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates.
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Petromyzontiformes
Family: Petromyzontidae
Subfamilies
Geotriinae
Mordaciinae
Petromyzontinae
A lamprey (sometimes also called lamprey eel
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Family: Petromyzontidae
Subfamilies
Geotriinae
Mordaciinae
Petromyzontinae
A lamprey (sometimes also called lamprey eel
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Agnatha (Greek, "no jaws") is a paraphyletic superclass of jawless fish in the phylum Chordata, subphylum Vertebrata. Agnatha have existed since the Cambrian, and continue to live in modern times.
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Petromyzontiformes
Family: Petromyzontidae
Subfamilies
Geotriinae
Mordaciinae
Petromyzontinae
A lamprey (sometimes also called lamprey eel
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Family: Petromyzontidae
Subfamilies
Geotriinae
Mordaciinae
Petromyzontinae
A lamprey (sometimes also called lamprey eel
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- For other uses of the term, see Fossil (disambiguation)
FOSSIL is a standard for allowing serial communication for telecommunications programs under the DOS operating system.
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Devonian is a geologic period of the Paleozoic era spanning from roughly 416 to 359 million years ago. It is named after Devon, England, where rocks from this period were first studied.
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- Palaeontology redirects here. For the scientific journal, see Palaeontology (journal).
Paleontology, palaeontology or palæontology (from Greek: paleo, "ancient"; ontos
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Ostracodermi
Ostracoderms ("shell-skinned") are any of several groups of extinct, primitive, jawless fishes that were covered in an armor of bony plates.
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Ostracoderms ("shell-skinned") are any of several groups of extinct, primitive, jawless fishes that were covered in an armor of bony plates.
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Devonian is a geologic period of the Paleozoic era spanning from roughly 416 to 359 million years ago. It is named after Devon, England, where rocks from this period were first studied.
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Ostracodermi
Ostracoderms ("shell-skinned") are any of several groups of extinct, primitive, jawless fishes that were covered in an armor of bony plates.
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Ostracoderms ("shell-skinned") are any of several groups of extinct, primitive, jawless fishes that were covered in an armor of bony plates.
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