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Dicoelosia
Taxonomy
Dicoelosia was named by King (1850).
It was corrected as Dicaelosia by Amsden (1951).
It was assigned to Dalmanellacea by Amsden (1951); to Orthida by Sepkoski (2002); and to Dicoelosiidae by Wright (1964), Bassett and Cocks (1974), Mitchell (1977), Temple (1987), Jin and Chatterton (1997), Williams et al. (2000), Rubel (2011).
It was corrected as Dicaelosia by Amsden (1951).
It was assigned to Dalmanellacea by Amsden (1951); to Orthida by Sepkoski (2002); and to Dicoelosiidae by Wright (1964), Bassett and Cocks (1974), Mitchell (1977), Temple (1987), Jin and Chatterton (1997), Williams et al. (2000), Rubel (2011).
Species
Dicaelosia johnsoni, Dicaelosia nitida, Dicaelosia oklahomenesis, D. alticavata, D. anticipata, D. baltica, D. biloba, D. cathaysiensis, D. diversifrons, D. indenta, D. inghami, D. jonesridgensis, D. lata, D. osloensis, D. paralata, D. parvifrons, D. simulata, D. transversa, D. varica, D. verneuiliana
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1850 | Dicoelosia King |
| 1869 | Bilobites Quenstedt |
| 1951 | Dicaelosia Amsden p. 77 |
| 1964 | Dicoelosia Wright |
| 1974 | Dicoelosia Bassett and Cocks |
| 1977 | Dicoelosia Mitchell |
| 1987 | Dicoelosia Temple p. 49 |
| 1997 | Dicoelosia Jin and Chatterton |
| 2000 | Dicoelosia Williams et al. p. 800 |
| 2002 | Dicoelosia Sepkoski |
| 2011 | Dicoelosia Rubel |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Dicoelosia King 1850
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†Dicaelosia johnsoni Sheehan 1976
†Dicaelosia nitida Johnson et al. 1973
†Dicaelosia oklahomenesis Amsden 1956
†Dicoelosia alticavata Whittard and Barker 1950
†Dicoelosia anticipata Wright 1968
†Dicoelosia baltica Musteikis and Puura 1983
†Dicoelosia biloba Linnaeus 1758
†Dicoelosia cathaysiensis Huang et al. 2013
†Dicoelosia diversifrons Johnson et al. 1976
†Dicoelosia indenta Cooper 1930
†Dicoelosia inghami Wright 1968
†Dicoelosia jonesridgensis Ross and Dutro 1966
†Dicoelosia lata Wright 1964
†Dicoelosia osloensis Wright 1968
†Dicoelosia paralata Bassett 1972
†Dicoelosia parvifrons Johnson et al. 1976
†Dicoelosia simulata Mitchell 1977
†Dicoelosia transversa Wright 1968
†Dicoelosia varica Conrad 1842
†Dicoelosia verneuiliana Beecher 1891
Invalid names: Bilobites Quenstedt 1869 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 8 | 2.09 | 1.44 | 3.04 | 2.10 | 0.652 |
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Williams et al. 2000, Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Richmondian to the top of the Pragian or 449.60000 to 410.62000 Ma
Collections (428 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Onnian - Cautleyan | Belgium | D. lata (185311 185314 185317 185318) D. lata, D. jonesridgensis (185313) | |
| Katian | United Kingdom | D. inghami (163114) | |
| Katian - Hirnantian | Sweden (Dalarne) | D. indenta (73413) | |
| Vormsi | Estonia | D. sp. (168968) D. transversa (168967) | |
| Richmondian | United Kingdom (Northern Ireland) | D. simulata (89260) | |
| Richmondian - Gamachian | Canada (Quebec) | Bilobites indentus (37790) | |
| Pirgu | Estonia | D. sp. (168972) D. transversa (168975) | |
| Pirgu | Norway (Ringerike) | D. inghami (162233) | |
| Pirgu | Sweden (Dalarne) | D. transversa, D. indenta (163115) | |
| Pirgu | Estonia (Lääne) | D. anticipata (163067) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Lochkovian | Czechia | D. nitida (14119) | |
| Lochkovian | Canada (Quebec) | D. sp. (654) | |
| Lochkovian | USA (Tennessee) | D. sp. (26852) | |
| Lochkovian | Ukraine | D. sp. (14152) | |
| Lochkovian | USA (New York) | D. sp. (24815) | |
| Lochkovian | Russian Federation (Bashkir) | D. biloba (13942 13955) | |
| Pragian | Czechia | D. dimera (12102 12103 12104) | |
| Pragian | Canada (Northwest Territories) | Dicoelosia indet. (75582) | |
| Pragian | Czechia (Prague) | D. sp. (12071) | |
| Pragian | Russian Federation (Bashkortostan) | D. biloba (81649 81654) | |