Paralogania
Paralogania is an extinct genus of thelodont fish that is known from the Upper Silurian geological period ; the best fossil deposits are from the Baltic Sea region, but it is widespread in the Northern Hemisphere.

en:User:Verisimilus · CC BY 3.0 · via Wikipedia/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
- LoganelliidaePBDB
- Motility
- actively mobilePBDB, for Chordata
Time the record covers
At least 13 million years on record.
The record covers at least 432.9 Mya to 419.62 Mya. No occurrence read is dated outside 443.1 Mya to 413.02 Mya.
81 occurrences of Paralogania on record, most of them in the Silurian. 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
81 occurrencesThese 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.
Found in
24 formations
- Downton Castle Sandstone Formation · Whitcliffe Group21
- Upper Whitcliffe Formation13
- Ludlow Bone Bed Formation11
- Krasnaya Bukhta Formation4
- Halla Formation4
- Ust'-Spokojnaya Formation3
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The named rock units Paralogania has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.
Paralogania and its relatives
SilurianWhere Paralogania and its relatives were recorded in the Silurian.
Found in the same rock
124 taxa- Thelodus parvidens27 sites
- Acanthodii16 sites
- Thelodus trilobatus13 sites
- Ozarkodina confluens12 sites
- Thelodus laevis10 sites
- Thelodus9 sites
- Thelodus pugniformis9 sites
- Wurmiella excavata7 sites
- Oulodus excavatus6 sites
- Tremataspis schmidti6 sites
- Coryssognathus dubius5 sites
- Ctenognathodus5 sites
- Ctenognathodus murchisoni5 sites
- Loganelliidae5 sites
- Oeselia5 sites
- Oulodus siluricus5 sites
- Ozarkodina bohemica5 sites
- Phlebolepis elegans5 sites
- Pterygolepis nitida5 sites
- Rytidolepis quenstedtii5 sites
- Saaremaaspis mickwitzi5 sites
- Thyestes verrucosus5 sites
- Tremataspis milleri5 sites
- Oeselaspis pustulata4 sites
The Paleobiology Database records 49 sites for Paralogania, 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
13 references- Thelodonts and distribution of associated conodonts from the Llandovery-lowermost Lochkovian of the Welsh Borderland40
- Siluro-Devonian thelodonts from the Welsh Borderland15
- Ordovician and Lower Silurian thelodonts from Severnaya Zemlya Archipelago (Russia)10
- End-Wenlock terminal Mulde carbon isotope excursion in Gotland, Sweden: Integration of stratigraphy and taphonomy for correlations across restricted facies and specialized faunas5
- Distribution of vertebrates in the Silurian of Estonia3
- Ludfordian conodonts from the Kaarma Quarry, Estonia1
- Thelodonts (Agnatha) from the basal beds of the Kuressaare Stage, Ludlow, Upper Silurian of Estonia1
- Upper Silurian thelodonts from Severnaya Zemlya Archipelago (Russia)1
- New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) taxa established in the Silurian and Lower Devonian of the Canadian Arctic Archipelago1
- Silurian communities of the Oslo Region, Norway1
- Vertebrate remains from Upper Silurian – Lower Devonian beds of Hall Land, North Greenland1
- Locality 6:6 Himmiste Quarry1
Each of the 81 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. 1 further reference is not listed. 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 Paralogania
- Source
- Wikipedia/Commons
- Credit
- en:User:Verisimilus
- Licence
- CC BY 3.0
- Commercial use
- the licence allows it
No 3D scan of Paralogania was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Paralogania”
- 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 itLoganelliidae through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Karatajute-Talimaa 1978