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Megokkos feldmanni
Taxonomy
Euphylax feldmanni was named by Nyborg et al. (2003). Its type specimen is USNM 494681 and is a 3D body fossil. Its type locality is LACMIP 6938, Kydikabbit Point, which is in a Priabonian submarine fan siltstone/conglomerate in the Hoko River Formation of Washington.
It was recombined as Megokkos feldmanni by Schweitzer et al. (2006) and Schweitzer et al. (2010).
It was recombined as Megokkos feldmanni by Schweitzer et al. (2006) and Schweitzer et al. (2010).
Synonymy list
| Year | Name and author |
|---|---|
| 2003 | Euphylax feldmanni Nyborg et al. p. 325 figs. Figs. 2.1–9, 3.1–2 |
| 2006 | Megokkos feldmanni Schweitzer et al. p. 128 |
| 2010 | Megokkos feldmanni Schweitzer et al. p. 107 |
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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.
†Megokkos feldmanni Nyborg et al. 2003
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. G. Nyborg et al. 2003 | Carapace trapezoidal, length about 72 percent maximum carapace width. Front broad, down-turned, weakly T- shaped, terminating in broadly triangular spine. Orbits very wide, with finely granular rim. Eyestalks very long, cylindrical, tapering to blunt point. Anterolateral margin short, bearing five spines, about 29 percent total length of carapace. Posterolateral margin long, about 62 percent of total length; posterolateral re-entrants wide, strongly convergent, rimmed. Posterior margin rimmed. Cardiac region widest of axial regions. Branchial region swollen, defined as adaxial elevation parallel to branchiocardiac groove. Propodus and dactylus of fifth pereiopod longitudinally rounded, paddlelike. Major, right cheliped enlarged in both sexes; manus not much longer than high; fixed finger long, terminating in sharp tooth; inner surface with shallow furrow just below midline; five large, rounded teeth spaced along finger with one to three smaller, sharp teeth in-between. Dactylus long, longitudinally vaulted, ar- cuate, terminating in rounded tooth; fourteen teeth along occlusal surface, proximal teeth largest. Teeth occlude with those of fixed finger with little or no gape. Minor cheliped considerably smaller than major cheliped. |