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Sirius
Description | Sirius (designated α Canis Majoris (Latinized to Alpha Canis Majoris, abbreviated Alpha CMa, α CMa)) is the brightest star in the night sky. Its name is derived from the Greek word Σείριος Seirios "glowing" or "scorching". With a visual apparent magnitude of −1.46, Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B. The distance between the two varies between 8.2 and 31.5 astronomical units as they orbit every 50 years. From Wikipedia article at https://en.wikipedia.org/wiki/Sirius, 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 : Gastropoda : Littorinimorpha : Capulidae : Sirius | ||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (PBDB) | Life : Animalia : Mollusca : Gastropoda : Capulidae : Sirius | ||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Scientific Name | Sirius Hedley, 1900 | ||||||||||||||||||||||||||||||||||||||||||||||||
Name Published In | Hedley C. (1900). Studies on Australian Mollusca. Part I. Proceedings of the Linnean Society of New South Wales. 25: 87-100. | ||||||||||||||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
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Status (PBDB) | extant | ||||||||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 3 | ||||||||||||||||||||||||||||||||||||||||||||||||
Extant Size (PBDB) | 1 (33%) | ||||||||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 33.9 - 28.4 Ma Oligocene | ||||||||||||||||||||||||||||||||||||||||||||||||
Motility | facultatively mobile, attached (based on Capulidae) | ||||||||||||||||||||||||||||||||||||||||||||||||
Vision | limited (based on Gastropoda) | ||||||||||||||||||||||||||||||||||||||||||||||||
Diet | suspension feeder (based on Capulidae) | ||||||||||||||||||||||||||||||||||||||||||||||||
Taphonomy | aragonite (based on Gastropoda) | ||||||||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560 | ||||||||||||||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Sirius |
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Sirius apicilirata ✝ species | listed (PBDB) | 1 | 23.0 Ma Miocene | 23.0 Ma Miocene | |
Sirius badius species | accepted (GBIF) | No associated record in PBDB | |||
Sirius cupiens species | accepted (GBIF) | No associated record in PBDB | |||
Sirius desponsus species | accepted (GBIF) | No associated record in PBDB | |||
Sirius idoneus species | accepted (GBIF) | No associated record in PBDB | |||
Sirius meracus species | accepted (GBIF) | No associated record in PBDB | |||
Sirius subquadrata ✝ species | listed (PBDB) | 1 | 16.0 Ma Miocene | 16.0 Ma Miocene | |
Trichotropis apicilirata species | accepted (GBIF) | No associated record in PBDB | |||
Trichotropis subquadrata species | accepted (GBIF) | No associated record in PBDB |
Obsolete Names
Name | Source | Taxon Rank | Taxonomy |
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Dolichosirius Iredale, 1931 | GBIF | genus | Animalia : Mollusca : Gastropoda : Littorinimorpha : Capulidae : Dolichosirius |
Opposirius Iredale, 1931 | GBIF | genus | Animalia : Mollusca : Gastropoda : Littorinimorpha : Capulidae : Opposirius |
Synonymy List
Year | Name and Author |
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1900 | Sirius Hedley |
1993 | Sirius Wilson p. 166 |
2002 | Sirius Sepkoski, Jr. |
2017 | Sirius Darragh p. 47 |
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!