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Taxonomy
Palaeonucula was named by Quenstedt (1930) [Sepkoski's age data: Tr Ladi J Tith Sepkoski's reference number: 93,159]. It is not extant.
It was reranked as Nucula (Palaeonucula) by Cox (1940); it was reranked as Nuculopsis (Palaeonucula) by Ichikawa (1951); it was reranked as Nuculoma (Palaeonucula) by Freneix (1958).
It was assigned to Nucula by Cox (1940); to Nuculopsis by Ichikawa (1951); to Nuculoma by Freneix (1958); to Nuculoida by Sepkoski (2002); to Palaeonuculinae by Bouchet et al. (2010); and to Nuculidae by Vokes (1980), Nützel and Kaim (2014), Ros-Franch et al. (2014).
It was reranked as Nucula (Palaeonucula) by Cox (1940); it was reranked as Nuculopsis (Palaeonucula) by Ichikawa (1951); it was reranked as Nuculoma (Palaeonucula) by Freneix (1958).
It was assigned to Nucula by Cox (1940); to Nuculopsis by Ichikawa (1951); to Nuculoma by Freneix (1958); to Nuculoida by Sepkoski (2002); to Palaeonuculinae by Bouchet et al. (2010); and to Nuculidae by Vokes (1980), Nützel and Kaim (2014), Ros-Franch et al. (2014).
Species
Nucula (Palaeonucula) cuneiformis, Nucula (Palaeonucula) putiensis, Nuculopsis (Palaeonucula) waltoni, P. aldanensis, P. biacuta, P. hammeri, P. lunulata, P. misolensis, P. navis, P. prisca, P. qingyanensis, P. qujiangensis, P. strigilata, P. subobliqua (syn. Nucula obliqua, Nucula tenuilineata), P. subrotundata, P. tulongensis
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Palaeonucula Quenstedt |
| 1940 | Nucula (Palaeonucula) Cox p. 13 |
| 1951 | Nuculopsis (Palaeonucula) Ichikawa p. 322 |
| 1958 | Nuculoma (Palaeonucula) Freneix p. 157 |
| 1980 | Palaeonucula Vokes p. 2 |
| 2002 | Palaeonucula Sepkoski |
| 2010 | Palaeonucula Bouchet et al. |
| 2014 | Palaeonucula Nützel and Kaim p. 423 |
| 2014 | Palaeonucula Ros-Franch et al. |
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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. †Palaeonucula Quenstedt 1930
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†Nucula (Palaeonucula) cuneiformis Sowerby 1840
†Nucula (Palaeonucula) putiensis Marwick 1953
†Nuculopsis (Palaeonucula) waltoni Morris and Lycett 1853
†Palaeonucula aldanensis Kurushin 1987
†Palaeonucula biacuta Hautmann 2001
†Palaeonucula hammeri Defrance 1825
†Palaeonucula lunulata Morningstar 1922
†Palaeonucula misolensis Jaworski 1915
†Palaeonucula navis Piette 1868
†Palaeonucula prisca Kurushin 1985
†Palaeonucula qingyanensis Chen 1976
†Palaeonucula qujiangensis Xiong 1978
†Palaeonucula strigilata Goldfuss 1837
†Palaeonucula subrotundata Morningstar 1922
†Palaeonucula tulongensis Wen and Lan 1976
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 4.75 | 3.20 | 7.20 | 4.65 | 2.03 | |
| valve height | 3 | 2.47 | 1.77 | 4.70 | 1.81 | 1.68 |
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| Source: f = family, c = class | |||||
| References: Mikkelsen and Bieler 2008, Aberhan et al. 2004 | |||||
Age range: base of the Chesterian to the top of the Aptian or 335.50000 to 113.00000 Ma
Collections (533 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chesterian | USA (Montana) | Nuculopsis sp. (577) | |
| Morrowan | USA (Ohio) | Nucula subrotundata (184122) Nucula subrotundata, Nucula lunulata (71998) | |
| Kungurian | Mexico (Sonora) | P. sp. (52097 52098) | |
| Changhsingian | Russian Federation | P. sp. (221957) | |
| Changhsingian | China (Guizhou) | P. sp. (121007) | |
| Changhsingian | Russian Federation (Sakha) | P. aldanensis (206755 206758) | |
| Griesbachian | Russian Federation (Sakha) | P. aldanensis (206759 206761 206762 206763 206764 206765) | |
| Griesbachian | China (Guizhou) | P. sp. (108559) P. sp., P. qingyanensis (108556) | |
| Griesbachian | Russian Federation | P. aldanensis (107122 221960) | |
| Spathian | Russian Federation | P. prisca (99909 99910 135853 135854 135856 135857 135858 135859 135860 135861) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Early/Lower Tithonian | India | P. stoliczkai, P. cuneiformis (62167) | |
| Puaroan | New Zealand | Nucula putiensis (63757) | |
| Middle Berriasian | China (Heilongjiang) | P. sp. (59662) | |
| Neocomian | Japan (Gumma) | P. ishidoensis (40488) | |
| Valanginian - Hauterivian | Svalbard and Jan Mayen | P. isfjordica (212486) | |
| Barremian | China | P. ishidoensis (50896) | |
| Aptian | Japan | Nuculopsis ishidoensis (69057) | |
| Aptian | Japan (Chiba) | P. ishidoensis (39580) | |
| Aptian - Albian | China (Xizang) | P. etheridgei (64249) | |
| Early/Lower Aptian | Lebanon | P. glanstriticea (69180) | |