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Hemiaster (Hemiaster) (heart urchin)
Discussion
The subgenus Hemiaster is extinct according to Treatise and WoRMS.
Taxonomy
Hemiaster (Hemiaster) was named by Lambert and Thiéry (1924). Its type is Spatangus bufo.
It was assigned to Hemiaster by Lambert and Thiéry (1924), Fischer (1966), Kier (1984).
It was assigned to Hemiaster by Lambert and Thiéry (1924), Fischer (1966), Kier (1984).
Species lacking formal opinion data
Hemiaster aquisgranensis, Hemiaster arnaudi, Hemiaster blanckenhorni, Hemiaster branderi, Hemiaster breviusculus, Hemiaster calvani, Hemiaster canaliferus, Hemiaster cenomanensis, Hemiaster chargensis, Hemiaster cubicus, Hemiaster cubicus, Hemiaster desmoulinsi, Hemiaster elongatus, Hemiaster faurai, Hemiaster frontacutus, Hemiaster gabrielis, Hemiaster gabrielis, Hemiaster grossouvrei, Hemiaster heberti, Hemiaster heberti, Hemiaster heberti, Hemiaster konickanus, Hemiaster koninckanus, Hemiaster kummeli, Hemiaster ligerensis, Hemiaster longuiformis, Hemiaster lovisatoi, Hemiaster maestrichtensis, Hemiaster medjesensis, Hemiaster minimus, Hemiaster moulinsanus, Hemiaster nasutulus, Hemiaster newtoni, Hemiaster newtoni, Hemiaster nucleus, Hemiaster phrynus, Hemiaster ricordeaui, Hemiaster similis, Hemiaster solignaci, Hemiaster steinmanni, Hemiaster ungulata, Hemiaster uwajimensis, Hemiaster vomer, Hemiaster weatherbyi, Hemiaster whitei
Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Hemiaster (Hemiaster) Lambert and Thiéry p. 499 |
| 1966 | Hemiaster (Hemiaster) Fischer p. U558 |
| 1984 | Hemiaster (Hemiaster) Kier p. 17 |
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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.
Subg. †Hemiaster (Hemiaster) Lambert and Thiéry 1924 [heart urchin]
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†Hemiaster (Hemiaster) madrugensis Weisbord 1934
†Hemiaster (Hemiaster) siboneyensis Weisbord 1934
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Kiessling 2004, Aberhan 1992 | |||||
Age range: base of the Late/Upper Cenomanian to the top of the Early/Lower Cenomanian or 100.50000 to 93.90000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Albian - Cenomanian | Egypt | Hemiaster gabrielis (150737) | |
| Early/Lower Cenomanian | Egypt | Hemiaster cubicus (184769) Hemiaster gabrielis (114872) | |
| Early/Lower Cenomanian - Late/Upper Cenomanian | Egypt | Hemiaster cubicus (114911) | |
| Late/Upper Cenomanian | Egypt | Hemiaster cubicus (114794) |