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Eochonetes maearum
Taxonomy
Eochonetes maearum was named by Bauer and Stigall (2016) [= Thaerodonta sp. Ross 1957 p. 457, pl. 40, fig. 22.
= Thaerodonta aff. T. clarksvillensis Macomber 1970 p. 439,
pl. 78, fig. 7a–d.]. Its type specimen is FMNH PE 11072, a shell, and it is a 3D body fossil. Its type locality is D1 (CO). South Fork Rock Creek, which is in a Richmondian deep subtidal limestone in the Bighorn Dolomite Formation of Wyoming.
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Eochonetes maearum Bauer and Stigall p. 905 fig. 7.12–7.15 |
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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.
†Eochonetes maearum Bauer and Stigall 2016
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. E. Bauer and A. L. Stigall 2016 | Angular to slightly acute cardinal extremities; wide delthyrium covered apically by short rounded pseudodeltidium; ventral interior unknown; denticles numerous (7), present on each cardinal extremity concentrated in center of hinge line; brachial process small, rounded; median septa faint, lacking elevation; lateral ridges and bema faint; bema extending outward from tips of brachial process.
Outline semicircular. Hinge line straight; cardinal extremities angular to slightly acute. Ventral interarea apsacline. Delthryium wide, covered apically by short rounded pseudodeltidium. Ventral interior unknown. Dorsal interarea hypercline. Denticles numerous, 7 on each cardinal extremity, concentrated in center of hinge line. Cardinal process small, slightly elevated; chilidial plates steep; brachial process small, rounded, extending anteriorly into median ridges; no true median septa; two ridges do not touch. Sockets wide, shallow. Muscle scar wide, lobe-shaped, separated by two median ridges that extend for two-thirds of valve; adductor scars equal in size with lateral ridges in center; lateral ridges faint, not extending as far as median ridges. Bema faint; anterior extension from brachial process. |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Richmondian or 449.60000 to 445.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Richmondian | USA (Wyoming) | Thaerodonta clarksvillensis (13497 type locality: 65239) |