Juvenile-Adult Habitat Shift in Permian Fossil Reptiles and Amphibians
Among extant large reptiles, juveniles often occupy different habitats from those of adults or subadults and thus avoid competition with and predation from the older animals; small juveniles often choose cryptic habitats because they are vulnerable to a wide variety of predators. Evidence from fossi...
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| Published in: | Science (American Association for the Advancement of Science) Vol. 217; no. 4554; pp. 53 - 55 |
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| Format: | Journal Article |
| Language: | English |
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United States
The American Association for the Advancement of Science
02-07-1982
American Association for the Advancement of Science |
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| Abstract | Among extant large reptiles, juveniles often occupy different habitats from those of adults or subadults and thus avoid competition with and predation from the older animals; small juveniles often choose cryptic habitats because they are vulnerable to a wide variety of predators. Evidence from fossil humeri and femora of Early Permian reptiles collected from sediments of several distinct habitats indicate that similar shifts in habitat occurred. Juvenile Dimetrodon seem to have favored cryptic habitats around swamp and swampy lake margins; adults favored open habitats on the floodplains. Similar patterns of habitat shift seem to be present in the reptile Ophiacodon and the amphibian Eryops and may have been common in fossil tetrapods of the Permian-Triassic. |
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| AbstractList | Among extant large reptiles, juveniles often occupy different habitats from those of adults or subadults and thus avoid competition with and predation from the older animals; small juveniles often choose cryptic habitats because they are vulnerable to a wide variety of predators. Evidence from fossil humeri and femora of Early Permian reptiles collected from sediments of several distinct habitats indicate that similar shifts in habitat occurred. Juvenile
Dimetrodon
seem to have favored cryptic habitats around swamp and swampy lake margins; adults favored open habitats on the floodplains. Similar patterns of habitat shift seem to be present in the reptile
Ophiacodon
and the amphibian
Eryops
and may have been common in fossil tetrapods of the Permian-Triassic. Among extant large reptiles, juveniles often occupy different habitats from those of adults or subadults and thus avoid competition with and predation from the older animals; small juveniles often choose cryptic habitats because they are vulnerable to a wide variety of predators. Evidence from fossil humeri and femora of Early Permian reptiles collected from sediments of several distinct habitats indicate that similar shifts in habitat occurred. Juvenile Dimetrodon seem to have favored cryptic habitats around swamp and swampy lake margins; adults favored open habitats on the floodplains. Similar patterns of habitat shift seem to be present in the reptile Ophiacodon and the amphibian Eryops and may have been common in fossil tetrapods of the Permian-Triassic. |
| Audience | Academic |
| Author | Bakker, Robert T. |
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/17739981$$D View this record in MEDLINE/PubMed |
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| Cites_doi | 10.1111/j.1469-7998.1975.tb01405.x 10.1017/S009483730000600X 10.1111/j.1096-3642.1961.tb00220.x 10.2307/1436750 10.1130/GSAB-46-1597 |
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| Copyright | Copyright 1982 The American Association for the Advancement of Science |
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| SubjectTerms | Amber Amphibians Amphibians, Fossil Fossils Habitat preferences Paleontology Prehistoric reptiles Reptiles Reptiles, Fossil Resonance Sediments Stream habitats Swamps Wildlife habitats |
| Title | Juvenile-Adult Habitat Shift in Permian Fossil Reptiles and Amphibians |
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