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Taxonomy
Protocardium (Brevicardium) fragile was named by Stephenson (1941) [m. kosnik taxon no: 766].
It was recombined as Brevicardium fragile by Stephenson (1941), Kosnik (2002).
It was recombined as Brevicardium fragile by Stephenson (1941), Kosnik (2002).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1941 | Brevicardium fragile Stephenson |
| 2002 | Brevicardium fragile Kosnik |
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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.
†Brevicardium fragile Stephenson 1941
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Todd 2001, Aberhan et al. 2004 | |||||
Age range: Maastrichtian or 72.20000 to 66.00000 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | USA (Missouri) | Protocardia fragile (4382) | |
| Late/Upper Maastrichtian | USA (Alabama) | Protocardia fragile (4194 4201) | |
| Late/Upper Maastrichtian | USA (Texas) | Protocardia fragile (4435 4436 4441 4490 4491) | |
| Late/Upper Maastrichtian | USA (Mississippi) | Protocardia fragile (4127) | |
| Maastrichtian | USA (Texas) | Brevicardium fragile (1297 1299 1394) | |
| Maastrichtian | USA (Mississippi) | Brevicardium fragile (1303 1305) | |
| Maastrichtian | USA (Alabama) | Brevicardium fragile (1306) | |
| Maastrichtian | USA (Missouri) | Brevicardium fragile (1295) |