| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hallirhoa costata
Taxonomy
Hallirhoa costata was named by Lamouroux (1821). It is not extant.
Subspecies
Sister species lacking formal opinion data
Entered
by B. Allen on 2026-04-21; modified by B. Allen on 2026-04-21
Synonymy list
| Year | Name and author |
|---|---|
| 1821 | Hallirhoa costata Lamouroux |
| 1883 | Hallirhoa costata Hinde |
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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.
†Hallirhoa costata Lamouroux 1821
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†Hallirhoa costata elevata Hinde 1883
†Hallirhoa costata tessonis Michelin 1847
†Hallirhoa costata brevicostata Michelin 1847
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Whittington et al. 1997 | |||||
Age range: base of the Late/Upper Albian to the top of the Late/Upper Turonian or 106.30000 to 89.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Albian - Late/Upper Albian | United Kingdom (England) | Hallirhoa costata (138713) | |
| Late/Upper Albian | United Kingdom (England) | Hallirhoa costata, Hallirhoa costata, Hallirhoa costata (153918) | |
| Cenomanian | France (Normandie) | Hallirhoa costata, Hallirhoa costata (278528) | |
| Late/Upper Turonian | France (Rhone-Alpes) | Siphonia costata (110461) |