Siphloplecton
Siphloplecton is a genus of cleftfooted minnow mayflies in the family Metretopodidae. There are about 15 described species in Siphloplecton.

Godunko RJ, Neumann C, Staniczek AH (2019) Revision of fossil Metretopodidae (Insecta, Ephemeroptera) in Baltic amber… · CC BY 4.0 · via Wikidata/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- MetretopodidaePBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At most 3.9 million years on record.
Every occurrence read is dated to somewhere between 37.71 Mya and 33.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
23 occurrences of Siphloplecton on record, most of them in the Eocene. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
23 occurrences- Eocene100%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Siphloplecton and its relatives
EoceneWhere Siphloplecton and its relatives were recorded in the Eocene.
Found in the same rock
1,384 taxa- Ablator triguttatus4 sites
- Archaea paradoxa4 sites
- Balticoroma serafinorum4 sites
- Dicranomyia (Dicranomyia) lobata4 sites
- Macrochile spectrum4 sites
- Mizalia4 sites
- Palaeoapsilocephala pusilla4 sites
- Amphientomum paradoxum3 sites
- Arctogephyra agilis3 sites
- Balticophasma3 sites
- Cheilotrichia (Empeda) pawlowskii3 sites
- Cupes tesselatus3 sites
- Dryinus janzeni3 sites
- Electrolotis hoffeinsorum3 sites
- Elephantomyia (Elephantomyia) longirostris3 sites
- Elephantomyia (Elephantomyia) pulchella3 sites
- Eomatachia latifrons3 sites
- Epipsocus avus3 sites
- Hypolestini3 sites
- Kroeberiella pinguis3 sites
- Nothorhina granulicollis3 sites
- Palaeopoecilostola longicornis3 sites
- Prolachlanius resinatus3 sites
- Prosphyracephala succini3 sites
The Paleobiology Database records 9 sites for Siphloplecton, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
5 references- Revision of fossil Metretopodidae (Insecta, Ephemeroptera) in Baltic amber – Part 4: Description of two new species of Siphloplecton Clemens, 1915, with notes on the new S. jaegeri species group and with key to fossil male adults of Siphloplecton7
- Revision of fossil Metretopodidae (Insecta: Ephemeroptera) in Baltic amber – Part 1: Type specimens of hitherto described fossil species of Siphloplecton Clemens, 1915 and Metretopus Eaton, 1901; with description of four new fossil species of Siphloplecton7
- Revision of fossil Metretopodidae (Insecta: Ephemeroptera) in Baltic amber — Part 3: Description of two new species of Siphloplecton Clemens, 1915, with notes on the re-discovered lectotype of Siphloplecton macrops (Pictet-Baraban & Hagen, 1856)6
- Deuxième contribution à la connaissance des Éphéméroptères de l'ambre oligocène de la Baltique2
- Die im Bernstein befindlichen Neuropteren der Vorwelt1
Each of the 23 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Siphloplecton
- Source
- Wikidata/Commons
- Credit
- Godunko RJ, Neumann C, Staniczek AH (2019) Revision of fossil Metretopodidae (Insecta, Ephemeroptera) in Baltic amber…
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Siphloplecton was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMetretopodidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Clemens 1915