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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hercosia
Taxonomy
Hercosia was named by Cooper and Grant (1969) [Sepkoski's age data: P Sakm P Leon-u Sepkoski's reference number: 7,538]. It is the type genus of Hercosiidae.
It was assigned to Hercosiidae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was assigned to Hercosiidae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Hercosia Cooper and Grant p. 7 |
| 2000 | Hercosia Williams et al. p. 613 |
| 2002 | Hercosia Sepkoski |
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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.
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 89 | 18.6 | 3.30 | 50.0 | 20.5 | 9.70 |
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| Source: subo = suborder, c = class, p = phylum | |||||
| References: Williams et al. 2000, Aberhan et al. 2004 | |||||
Age range: base of the Artinskian to the top of the Wuchiapingian or 290.10000 to 254.14000 Ma
Collections (104 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (Texas) | H. uddeni (75885) Prorichthofenia likharewi (149862 150667) | |
| Kungurian | Guatemala (Huehuetenango) | H. sp. (41537) | |
| Kungurian | USA (Texas) | H. delicata, H. uddeni (105931) H. uddeni (43459 43466 43491 43492 43494 43498 43504 43510 43514 43515 43516 43560 43574 43582 44519 44565 75919 81635 81638 81710 101785 101811 105687 105746 105755 105843 105848 105849 105852 105883 105935 105938 105939 105981 105982 106114 106121) Prorichthofenia likharewi (113191 113192 113195 113198 113203 113205 113216 113224 122519 122520 149778 149779 149782 149783 149785 149826 149831 149834 149993 149995 150115 150116 150117 150245 150246 150247 150251 150554 150556 150557 150669 150780 150842 150863 150954 150957 151111 151232 151233 151234 151235 151236 151238) Prorichthofenia likharewi, Prorichthofenia uddeni (113193 121457 149997) Prorichthofenia uddeni (149820 149833 150244 150564 150846 150847 151265 151266) | |
| Kungurian - Wordian | USA (Texas) | Prorichthofenia likharewi (149822 151237) | |
| Roadian | USA (Texas) | H. uddeni (81639) Prorichthofenia uddeni (108398) | |
| Wordian | Mexico (Coahuila) | Prorichthofenia likharewi (63053) | |
| Capitanian | Mexico (Coahuila) | Prorichthofenia likharewi (62912 150783) | |
| Wuchiapingian | China (Guangxi) | H. sp. (112398) |