CLADOENDESIS OF EPHEMEROPTERA
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† Plesiomorphon Palaeocloeon/fg1

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna pm.Tridentiseta  
Tetramerotarsata Liberevenata - pm.Palaeocloeon)

Nomen hierarchicum: Palaeocloeon/fg1 [fg:1997]

In circumscription fits:

— gen. Palaeocloeon Kluge 1997c: 532

— subfam. Palaeocloeoninae Kluge 1997c: 531

— plesiomorphon Palaeocloeon/fg(1): Kluge 2004: 101

Nominal taxa included: 

Petracloeon [g:2025]

Petracloeon is said to differ from Palaeocloeon by separated furcasternal protuberances (as in Turbanoculata) and presence of patella-tibial suture on fore leg (as in Anteropatellata) (Sroka & Gattolliat 2025). But on the single specimen (female imago) furcasternum is closed by bubble, and fore leg is dirty.

 

References. Kluge 1997c: ; – Kluge 2004: .

Plesiomorphies of Palaeocloeon. Unlike Turbanoculata, eyes of male are not divided into two portions; furcasternal protuberances are contiguous (Kluge 2004: Fig.27:F). On fore wing in each space only one marginal intercalary is present [see Liberevenata (2)] (Kluge 2004: Fig.27:A).

Size. Fore wing length 2 mm.

Age. Late Cretaceous (Taimyr amber).

Nominal species in Palaeocloeon/fg(1): 1 species

carolinensis Sroka & Gattolliat 2025 [Petracloeon] — typus nominis Petracloeon

taimyricum Kluge 1997 [Palaeocloeon] ,,(Pal.Inst.)

See also:

Liberevenata INCERTAE SEDIS

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