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Plagiochasma cruciferum

Echinoidea - Nucleolitidae

Taxonomy
Ananchytes cruciferus was named by Morton (1830). Its type specimen is ANSP 1464, a test, and it is a 3D body fossil.

It was recombined as Nucleolites cruciferus by Morton (1833); it was recombined as Nucleolites crucifer by Morton (1834); it was recombined as Pygorhynchus crucifer by Ravenel (1850); it was recombined as Echinobrissus crucifer by d'Orbigny (1854); it was recombined as Trematopygus crucifer by d'Orbigny (1858) and Cooke (1942); it was recombined as Trematopygus cruciferus by Clark and Twitchell (1915) and Clark (1915); it was recombined as Rhopostoma cruciferum by Cooke (1959); it was recombined as Plagiochasma cruciferum by Kroh (2001).

Synonyms
  • Trematopygus analis was named by dOrbigny (1855).

    It was synonymized subjectively with Plagiochasma cruciferum by Kroh (2001).
  • Nucleolites analis was named by Agassiz (1857).

    It was recombined as Plagiochasma analis by Meijer (1965); it was synonymized subjectively with Plagiochasma cruciferum by Kroh (2001).
  • Pyrina freucheni was named by Desor (1926).

    It was synonymized subjectively with Plagiochasma cruciferum by Kroh (2001).
Synonymy list
YearName and author
1830Ananchytes cruciferus Morton p. 245 figs. pl. 3, fig. 8
1833Nucleolites cruciferus Morton p. 294
1834Nucleolites crucifer Morton
1850Pygorhynchus crucifer Ravenel p. 160
1854Echinobrissus crucifer d'Orbigny p. 25
1855Trematopygus analis dOrbigny
1857Nucleolites analis Agassiz
1858Trematopygus crucifer d'Orbigny p. 387
1915Trematopygus cruciferus Clark p. 71
1915Trematopygus cruciferus Clark and Twitchell p. 71
1926Pyrina freucheni Desor
1942Trematopygus crucifer Cooke p. 10
1959Rhopostoma cruciferum Cooke p. 26
1965Plagiochasma analis Meijer
2001Plagiochasma cruciferum Kroh

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
familyNucleolitidae
genusPlagiochasma
speciescruciferum(Morton 1830)

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.

†Plagiochasma cruciferum Morton 1830
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Invalid names: Nucleolites analis Agassiz 1857 [synonym], Pyrina freucheni Desor 1926 [synonym], Trematopygus analis dOrbigny 1855 [synonym]
Diagnosis
No diagnoses are available