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Aptychus ✝
Description | An aptychus is a type of marine fossil. It is a hard anatomical structure, a sort of curved shelly plate, now understood to be part of the body of an ammonite. Paired aptychi have, on rare occasions, been found at or within the aperture of ammonite shells. The aptychus was usually composed of calcite, whereas the ammonite shell was aragonite. From Wikipedia article at https://en.wikipedia.org/wiki/Aptychus, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | |||||||||||||||||||||||||||||||||||||||
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Source Data |
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Rank | genus | |||||||||||||||||||||||||||||||||||||||
Taxonomy (GBIF) | Life : Animalia : Mollusca : Cephalopoda : Aptychus | |||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Mollusca : Cephalopoda : Ammonoidea : Aptychus | |||||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Scientific Name | Aptychus von Meyer, 1831 | |||||||||||||||||||||||||||||||||||||||
Name Published In | Jahrb. f. Min., 1831 | |||||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
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Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 2 | |||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 165 - 161 Ma Jurassic | |||||||||||||||||||||||||||||||||||||||
Last Recorded Appearance | 83.5 - 70.6 Ma Late/Upper Cretaceous | |||||||||||||||||||||||||||||||||||||||
Motility | fast-moving (based on Ammonoidea) | |||||||||||||||||||||||||||||||||||||||
Vision | well-developed (based on Cephalopoda) | |||||||||||||||||||||||||||||||||||||||
Diet | carnivore (based on Ammonoidea) | |||||||||||||||||||||||||||||||||||||||
Taphonomy | aragonite (based on Ammonoidea) | |||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | T. W. Stanton. 1895. Contributions to the Cretaceous paleontology of the Pacific coast. : The fauna of the Knoxville. Bulletin of the United States Geological Survey 133:1-132 | |||||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Aptychus |
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Aptychus atlanticus species | accepted (GBIF) | No associated record in PBDB | |||
Aptychus knoxvillensis ✝ species | accepted (GBIF) listed (PBDB) |
Obsolete Names
Name | Source | Taxon Rank | Taxonomy |
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Ichthyosiagon Herrmannsen, 1847 | GBIF | genus | Animalia : Mollusca : Cephalopoda : Ichthyosiagon |
Aptycus Deshayes, 1845 | GBIF | genus | Animalia : Mollusca : Cephalopoda : Aptycus |
Munsteria Deslongchamps, 1835 | GBIF | genus | Animalia : Mollusca : Cephalopoda : Munsteria |
Trigonellites Parkinson, 1811 | GBIF | genus | Animalia : Mollusca : Cephalopoda : Trigonellites |
Muensteria Deslongchamps, 1835 | GBIF | genus | Animalia : Mollusca : Cephalopoda : Muensteria |
Ichthyosiagones Bourdet de la Nièvre, 1822 | GBIF | genus | Animalia : Mollusca : Cephalopoda : Ichthyosiagones |
Synonymy List
Year | Name and Author |
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1861 | Aptychus von Meyer |
1895 | Aptychus Stanton p. 83 |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!