Balcoracania ✝
| Description | Balcoracania dailyi is a small (typically about 1.5 centimetres (0.59 in)) trilobite of the family Emuellidae. Its fossils have been found in south Australia and Antarctica. It can be recognised by a short field between the front of the axis in the head (or glabella) and the border ridge, and a semi-circular headsheald, as compared to touching glabella and border, and the sub-pentagonal head, in the sister-genus Emuella. Both emuellid genera share eye ridges that are positioned parallel to the frontal and lateral border of the head, prominent genal spines that are a smooth continuation of the lateral margin of the head, a prothorax of 6 segments, with the 5th and 6th merged and carrying large trailing spines. Both genera have in adulthood a highly variable but large number of segments of the opistothorax, although the largest number found in B. dailyi with 97 is much larger than in Emuella (52). B. dailyi is the only known species in this genus (i.e., the genus is monotypic). From Wikipedia article at https://en.wikipedia.org/wiki/Balcoracania, 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,PBDB) | Life : Animalia : Arthropoda : Trilobita : Redlichiida : Emuellidae : Balcoracania | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Balcoracania Pocock, 1970 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Name Published In | Palaeontology 13 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 520 - 513 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Recorded Appearance | 516 - 513 Ma Cambrian | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Environment | marine (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Motility | fast-moving (based on Redlichiida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Vision | well-developed (based on Emuellidae) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Diet | deposit feeder (based on Redlichiida) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Ontogeny | molting,addition of parts (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Taphonomy | low Mg calcite, chitin (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 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/Balcoracania |
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Balcoracania dailyi ✝ species | accepted (GBIF) listed (PBDB) | 1 | 516 Ma Cambrian | 516 Ma Cambrian |
Synonymy List
| Year | Name and Author |
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| 1970 | Balcoracania Pocock |
| 1997 | Balcoracania Whittington et al. p. 429 |
| 2002 | Balcoracania Sepkoski, Jr. |
| 2006 | Balcoracania Paterson and Edgecombe p. 506 |
References
