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Lytechinus
Taxonomy
Lytechinus was named by Agassiz (1863) [Sepkoski's age data: T Mi-l R Sepkoski's reference number: 577]. It is extant.
It was assigned to Echinidae by Grant and Hertlein (1938), Cooke (1941); to Temnopleuroida by Sepkoski (2002); and to Toxopneustidae by Fell and Pawson (1966), Linder et al. (1988), Smith (2009).
It was assigned to Echinidae by Grant and Hertlein (1938), Cooke (1941); to Temnopleuroida by Sepkoski (2002); and to Toxopneustidae by Fell and Pawson (1966), Linder et al. (1988), Smith (2009).
Synonymy list
| Year | Name and author |
|---|---|
| 1863 | Lytechinus Agassiz p. 24 |
| 1938 | Lytechinus Grant and Hertlein p. 23 |
| 1941 | Lytechinus Cooke p. 16 |
| 1966 | Lytechinus Fell and Pawson p. U427 |
| 1988 | Lytechinus Linder et al. p. 950 |
| 2002 | Lytechinus Sepkoski |
| 2009 | Lytechinus Smith |
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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. Lytechinus Agassiz 1863
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Lytechinus anamesus Clark 1912
†Lytechinus baldwini Linder et al. 1988
†Lytechinus coreyi Grant and Hertlein 1938
†Lytechinus milleri Grant and Hertlein 1938
†Lytechinus pictus Verrill 1867
†Lytechinus semituberculatus Agassiz and Desor 1867
Lytechinus variegatus Lamarck 1816
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Kiessling 2004, Aberhan 1992 | |||||
Age range
Maximum range based only on fossils: base of the Chattian to the top of the Late/Upper Pleistocene or 27.30000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 23.04 Ma
Minimum age of oldest fossil (stem group age): 23.04 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chattian | USA (Oregon) | L. baldwini (90569) | |
| Early/Lower Miocene | USA (California) | L. coreyi, L. pictus (203414) L. milleri (203415) | |
| Early/Lower Pliocene | USA (Florida) | L. variegatus (35026) | |
| Pliocene | Fiji | L. crassus (68179) | |
| Pliocene | Mexico (Baja California) | Strongylocentrotus purpuratus (97124) | |
| Early/Lower Pleistocene | USA (Florida) | L. variegatus (35025) | |
| Pleistocene | USA (South Carolina) | Toxopneustes variegatus (79745) | |
| Middle Pleistocene | Barbados | L. sp. (48021) | |
| Late/Upper Pleistocene | USA (South Carolina) | Toxopneustes variegatus (66760) | |
| Late/Upper Pleistocene | USA (California) | L. pictus (59063) L. sp. (160361) | |
| Late/Upper Pleistocene | Jamaica | L. sp. (90592) |