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Elmosteus
Taxonomy
Elmosteus was named by Jobbins et al. (2025).
It was assigned to Dunkleosteidae by Jobbins et al. (2025).
It was assigned to Dunkleosteidae by Jobbins et al. (2025).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2025 | Elmosteus Jobbins et al. p. 2 |
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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
| Reference | Diagnosis | |
|---|---|---|
| M. Jobbins et al. 2025 | Medium-sized placoderm with tuberculated ornamentation; extensive contact between the pineal and central plates; no preorbital medial contact; lateral and posterior lobes of the central plates are present but the latter is not acutely developed; long extent of the marginal plate along the lateral border of the skull; the supraorbital and central sensory lines meet on the central plate; partially closed angle between the postorbital and otic branches of the infraorbital sensory line groove; inferognathal with small anterior cusp. Traits unique to the taxon among eastmanosteids include globular, T-shaped rostral plate with an anterior development; pineal plate with anterolateral concave margins; anterior lobe of central plate is elongate and narrow; marginal plate with a posterolaterally developed lobe ventral to the main lateral line; nuchal elongate and narrow anteriorly with a straight posterior margin wider than length of the plate. Two posterior pit lines branch off from the main lateral line, with the lateral one more superficial. Anterior superognathal with posterolateral process highly reduced dorsally. Inferognathal biting division bearing only one or two shearing denticles. |
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| Reference: Carroll 1988 | |||||
Age range: base of the Late/Upper Eifelian to the top of the Early/Lower Givetian or 390.50000 to 385.90000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Eifelian - Early/Lower Givetian | Canada (Manitoba) | Eastmanosteus lundarensis (278711 278712 278713 278714) |