| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Nucleolites
Taxonomy
Nucleolites was named by Lamarck (1801) [Sepkoski's age data: J Bajo-u T Eo Sepkoski's reference number: 577].
It was reranked as Disaster (Nucleolites) by Quenstedt (1852).
It was assigned to Disaster by Quenstedt (1852); to Cassiduloida by Sepkoski (2002); and to Nucleolitidae by Kier (1962), Kier (1966), Smith (2009).
It was reranked as Disaster (Nucleolites) by Quenstedt (1852).
It was assigned to Disaster by Quenstedt (1852); to Cassiduloida by Sepkoski (2002); and to Nucleolitidae by Kier (1962), Kier (1966), Smith (2009).
Species
Species lacking formal opinion data
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1801 | Nucleolites Lamarck p. 347 |
| 1825 | Echinobrissus Gray |
| 1852 | Disaster (Nucleolites) Quenstedt |
| 1915 | Echinobrissus Clark and Twitchell p. 69 |
| 1936 | Echinobrissus Maury p. 276 |
| 1962 | Nucleolites Kier p. 56 |
| 1963 | Echinobrissus Jesionek-Szymanska p. 336 |
| 1966 | Nucleolites Kier p. U501 |
| 1971 | Echinobrissus Poretskaya p. 6 |
| 2002 | Nucleolites Sepkoski |
| 2009 | Nucleolites Smith pp. http://www.nhm.ac.uk/our-science/data/ec |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Nucleolites Lamarck 1801
show all | hide all
†Nucleolites hori Fourtau 1921
†Nucleolites scutatus Lamarck 1816
Invalid names: Echinobrissus Gray 1825 [objective synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. B. Smith 2009 | Test of small to medium size, broad with greatest width posterior to centre, moderately inflated with thick margins; Apical system tetrabasal, four gonopores, no complemental plates in the disc; Petals long, open, poriferous zones narrowing distally but remaining open, pores conjugate, outer pore transversely elongated; all ambulacral plates with double pores, Periproct supramarginal, longitudinal, with short anal groove; opening at some distance from the apical disc; Peristome anterior, subpentagonal; opening without vertical-walled entrance but oral surface weakly sunken towards peristome; Bourrelets hardly developed; Phyllodes narrow, not bowed towards peristome, double pored, with two series of pore-pairs in each half-ambulacrum; No buccal pores. |