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Eoinachoides
Taxonomy
Eoinachoides was named by Van Straelen (1933) [Sepkoski's age data: T Eo-u]. Its type is Eoinachoides senni.
It was assigned to Majidae by Van Straelen (1933); to Decapoda by Sepkoski (2002); to Epialtinae by Schweitzer et al. (2010), Luque et al. (2017) and Schweitzer et al. (2020); to Epialtidae by Garassino et al. (2021); and to Inachoididae by Lima et al. (2022).
It was assigned to Majidae by Van Straelen (1933); to Decapoda by Sepkoski (2002); to Epialtinae by Schweitzer et al. (2010), Luque et al. (2017) and Schweitzer et al. (2020); to Epialtidae by Garassino et al. (2021); and to Inachoididae by Lima et al. (2022).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1933 | Eoinachoides Van Straelen |
| 2002 | Eoinachoides Sepkoski |
| 2010 | Eoinachoides Schweitzer et al. p. 92 |
| 2017 | Eoinachoides Luque et al. p. 23 |
| 2020 | Eoinachoides Schweitzer et al. p. 3 |
| 2021 | Eoinachoides Garassino et al. p. 2 |
| 2022 | Eoinachoides Lima et al. p. 338 |
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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.
G. †Eoinachoides Van Straelen 1933
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†Eoinachoides bretoni Garassino et al. 2021
†Eoinachoides latispinosus Carriol et al. 1987
†Eoinachoides senni Van Straelen 1933
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Lima et al. 2022 | Carapace (Fig. 3.1) pyriform in outline. Gastric regions swollen, fused together without traces of furrows, except for a faint, incomplete line between the meso- and metagastric regions. Proto- and mesogastric regions circular in outline; metagastric region gently narrowed posteriorly. Metagastric region with one tubercle. Hepatic and subhepatic regions distinctly separated by a deep furrow (not confirmed in E. latispinosus due to preservation). Urogastric region distinctly longer than wide. Cardiac region moderately swollen, higher than the remaining carapace regions, bearing three tubercles arranged in a V-shaped pattern. Cardiac region delimitated laterally by a deep, smooth furrow provided with a single, distinct tubercle (not confirmed in E. latispinosus due to preservation). Meso- and metabranchial regions very large, strongly swollen. Mesobranchial region with one prominent tubercle. Thoracic-sternum wide. Sternite IV largest, bearing a large rounded protuberance (Fig. 3.2). Sterno-pleonal cavity rather deep, formed by sternites IV–VIII. Episternal projections V–VII distinct. First pleonal somite smooth, with a prominent transverse ridge (see Feldmann and Schweitzer, 2004, fig. 2); pleonal protuberance on first pleonal somite absent (not confirmed in E. latispinosus due to preservation). |