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Distephanus speculum
Taxonomy
Dictyocha speculum was named by Ehrenberg (1839). It is extant.
It was recombined as Distephanus speculum by Haeckel (1887), Martin (1904), Lakhanpal et al. (1976).
It was recombined as Distephanus speculum by Haeckel (1887), Martin (1904), Lakhanpal et al. (1976).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1839 | Dictyocha speculum Ehrenberg p. 129 |
| 1887 | Distephanus speculum Haeckel p. 1565 |
| 1904 | Distephanus speculum Martin p. 447 |
| 1976 | Distephanus speculum Lakhanpal 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.
Distephanus speculum Ehrenberg 1839
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Burdigalian to the top of the Holocene or 20.45000 to 0.00000 Ma
Collections (171 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Miocene | North Pacific | Dictyocha speculum (261371) | |
| Aquitanian - Langhian | USA (North Carolina) | Distephanus speculum (48887) | |
| Miocene | Southern Ocean | Distephanus speculum (244417 245876 245877 245879) | |
| Neogene | India (Andaman and Nicobar Islands) | Distephanus speculum (224619) | |
| Burdigalian - Langhian | Mexico (Baja California) | Distephanus speculum (236356) | |
| Langhian | Mexico (Baja California) | Distephanus speculum (52183) | |
| Middle Miocene | Southern Ocean | Distephanus speculum (243209) | |
| Middle Miocene | Chile (Coquimbo) | Distephanus speculum (222363) | |
| Middle Miocene - Late/Upper Miocene | North Pacific | Dictyocha speculum (261335) | |
| Late/Upper Miocene | North Pacific | Dictyocha speculum (261301 261302 261310 261317 261318 261319 261323 261324 261325 261331) | |
| Zanclean | North Pacific | Distephanus speculum (271977) | |
| Pliocene | North Pacific | Dictyocha speculum (261287 261288 261289) | |
| Pliocene - Pleistocene | North Pacific | Dictyocha speculum (261276 261277) | |
| Piacenzian | North Pacific | Distephanus speculum (270086 270087 270088 270089 270090 270091 270092 270093 270617 271972 271973 271974 271975 271976) | |
| Piacenzian - Gelasian | North Pacific | Distephanus speculum (270616 271971) | |
| Gelasian | North Pacific | Distephanus speculum (270080 270081 270082 270083 270084 270085 270475 270476 270478 270608 270609 270610 270611 270612 270613 270614 270615 271963 271964 271965 271966 271967 271968 271969 271970) | |
| Gelasian - Calabrian | North Pacific | Distephanus speculum (271962) | |
| Pleistocene | North Pacific | Dictyocha speculum (261271 261272 261273) Distephanus speculum (269378 269380 269381 269382 269384 269385 269386 269387 269388 269389 272401 272402) | |
| C2r.1r | North Pacific | Distephanus speculum (270332) | |
| Calabrian | North Pacific | Distephanus speculum (270065 270066 270068 270071 270072 270073 270074 270075 270076 270077 270078 270079 270324 270326 270327 270328 270469 270470 270474 270480 270481 270482 270483 270484 270485 270486 270487 270590 270591 270592 270593 270594 270595 270596 270597 270598 270599 270600 270601 270603 270605 270606 270607 271853 271854 271856 271857 271858 271859 271860 271861 271862 271864 271865 271866 271867 271868 271869 271870 271871 271873 271874 271875 271876 271877 271878 271880 271881 271882 271884 271885 271887 271888 271953 271954 271957 271959 271960 271961) | |
| C1r.2r | North Pacific | Distephanus speculum (270331) | |
| Brunhes | North Pacific | Distephanus speculum (270330) | |
| NN21 | North Pacific | Distephanus speculum (272405) | |
| Holocene | Southern Ocean | Distephanus speculum (244103 244104 244105) |