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Macroacaena alseanus
Taxonomy
Lyreidus alseanus was named by Rathbun (1932). Its type specimen is USNM 371901, a carapace, and it is a 3D body fossil. Its type locality is South side of Alsea Bay, which is in a Rupelian marine sandstone in the Alsea Formation of Oregon.
It was recombined as Lyreidus (Lysirude) alseanus by Feldmann (1992); it was recombined as Macroacaena alseanus by Tucker (1998) and Schweitzer et al. (2000); it was recombined as Macroacaena alseana by Schweitzer et al. (2003), Schweitzer et al. (2010) and Karasawa et al. (2014).
It was recombined as Lyreidus (Lysirude) alseanus by Feldmann (1992); it was recombined as Macroacaena alseanus by Tucker (1998) and Schweitzer et al. (2000); it was recombined as Macroacaena alseana by Schweitzer et al. (2003), Schweitzer et al. (2010) and Karasawa et al. (2014).
Synonymy list
Year | Name and author |
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1932 | Lyreidus alseanus Rathbun p. 239 fig. 3,4 |
1989 | Lyreidus alseanus Feldmann p. 63 |
1992 | Lyreidus (Lysirude) alseanus Feldmann p. 951 |
1998 | Macroacaena alseanus Tucker p. 327 |
2000 | Macroacaena alseanus Schweitzer et al. p. 28 |
2003 | Macroacaena alseana Schweitzer et al. p. 28 |
2010 | Macroacaena alseana Schweitzer et al. p. 71 |
2014 | Macroacaena alseana Karasawa et al. p. 246 |
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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.
†Macroacaena alseanus Rathbun 1932
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Diagnosis
Reference | Diagnosis | |
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R. M. Feldmann 1989 | Raninid with tridentate frontoorbital margin; fusiform carapace outline; hypertrophied, straight, slender, lateral spines; and sinuous anterolateral margin with small spine. |