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Echinarachnius
Taxonomy
Echinarachnius was named by Gray (1825) [Sepkoski's age data: T Mi-m R]. It is extant.
It was reranked as Scutella (Echinarachnius) by Clark (1909); it was corrected as Echinarachinus by Wagner (1974).
It was assigned to Scutella by Clark (1909); to Echinoidea by Pack (1909); to Scutellidae by Grant and Hertlein (1938); to Scutellidae by Clark and Twitchell (1915) and Cooke (1942); to Echinarachniidae by Durham (1955), Durham (1966) and Wagner (1974); and to Clypeasteroida by Sepkoski (2002).
It was reranked as Scutella (Echinarachnius) by Clark (1909); it was corrected as Echinarachinus by Wagner (1974).
It was assigned to Scutella by Clark (1909); to Echinoidea by Pack (1909); to Scutellidae by Grant and Hertlein (1938); to Scutellidae by Clark and Twitchell (1915) and Cooke (1942); to Echinarachniidae by Durham (1955), Durham (1966) and Wagner (1974); and to Clypeasteroida by Sepkoski (2002).
Synonymy list
Year | Name and author |
---|---|
1825 | Echinarachnius Gray p. 428 |
1909 | Scutella (Echinarachnius) Clark p. 140 |
1909 | Echinarachinus Pack p. 281 |
1915 | Echinarachnius Clark and Twitchell p. 195 |
1938 | Echinarachnius Grant and Hertlein p. 56 |
1942 | Echinarachnius Cooke p. 16 |
1955 | Echinarachnius Durham p. 163 figs. Figs. 1, i; 3, b; 6, e; 8, a; 9, a; 10, a; 23; 24; 26, 1; 3;4, a-c; pl. 2, fig. 4 |
1966 | Echinarachnius Durham p. U481 |
1974 | Echinarachinus Wagner p. 109 |
2002 | Echinarachnius Sepkoski |
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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. Echinarachnius Gray 1825
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†Echinarachnius alaskense Durham 1957
†Echinarachnius andersoni Twitchell 1905
†Echinarachnius astrodapsoides Wagner 1974
†Echinarachnius brewerianus Rémond 1863
†Echinarachnius newcombei Kew 1920
Echinarachnius parma Lamarck 1816
†Echinarachnius parma obesa Clark 1914
†Echinarachnius plafkeri Wagner 1974
†Echinarachnius ungaensis Wagner 1974
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class, p = phylum | |||||
References: Aberhan 1992, Kiessling 2004, Aberhan et al. 2004 |
Age range
Maximum range based only on fossils: base of the Chattian to the top of the Late/Upper Pleistocene or 28.10000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 23.03 Ma
Minimum age of oldest fossil (stem group age): 23.03 Ma
Collections (11 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Chattian | Canada (British Columbia) | E. newcombei (203538) | |
Early/Lower Miocene | USA (New Jersey) | E. sp. (59723) | |
Miocene | USA (California) | E. andersoni (203535) | |
Miocene | USA (Alaska) | E. alaskense (203143) E. astrodapsoides, E. ungaensis (203150) | |
Tortonian | USA (Alaska) | E. ungaensis (37414) | |
Late/Upper Miocene | USA (Alaska) | E. plafkeri (187109) | |
Early/Lower Pliocene | USA (Alaska) | E. ungaensis (203141) | |
Pliocene | USA (Alaska) | E. sp. (112321) | |
Late/Upper Pliocene | Taiwan | E. mirabilis (72016) | |
Late/Upper Pleistocene | USA (Alaska) | E. parma (41300) |