Phaulactis
Phaulactis is an extinct genus of rugose coral that existed during the Ordovician, Silurian and Devonian periods. It can be found in Europe, North America, Asia and Australia. Phaulactis was described by Ryder in 1926.

Oskar josefsson · CC BY-SA 4.0 · 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
- LykophyllidaePBDB
- Diet
- suspension feederPBDB, for Rugosa
- Life habit
- epifaunalPBDB, for Rugosa
- Motility
- stationary, attachedPBDB, for Rugosa
- Vision
- blindPBDB, for Anthozoa
- Environment
- marinePBDB, for Rugosa
Time the record covers
At least 30 million years on record.
The record covers at least 443.1 Mya to 413.02 Mya. No occurrence read is dated outside 449.6 Mya to 410.62 Mya.
69 occurrences of Phaulactis 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
69 occurrences- Ordovician1%
- Silurian90%
- Devonian9%
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.
Found in
39 formations
- Karheen Formation7
- Khaastyrka Formation5
- Upper Visby Formation4
- Khkoma Formation4
- Silverdale Formation3
- Upper Visby Beds Formation2
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The named rock units Phaulactis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 further formations hold fewer occurrences each and are not listed. 4 occurrences have no formation on record, which is common for older literature.
Phaulactis and its relatives
SilurianWhere Phaulactis and its relatives were recorded in the Silurian.
Found in the same rock
799 taxa- Favosites19 sites
- Favosites gothlandicus18 sites
- Heliolites17 sites
- Syringopora16 sites
- Entelophyllum15 sites
- Tryplasma15 sites
- Bryozoa13 sites
- Howellella11 sites
- Parastriatopora11 sites
- Beyrichia10 sites
- Crinoidea10 sites
- Atrypa reticularis9 sites
- Cystihalysites9 sites
- Gastropoda9 sites
- Subalveolites9 sites
- Atrypa8 sites
- Holmophyllum8 sites
- Hyattidina8 sites
- Paleofavosites8 sites
- Stromatoporoidea8 sites
- Alispira7 sites
- Calymene7 sites
- Dalejina7 sites
- Dinophyllum7 sites
The Paleobiology Database records 50 sites for Phaulactis, 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
26 references- Oporniih razrez reki Moiero silura Sibirskoi platformih -The Silurian composit section of the Moiero River (Sibirian platform)9
- Silurian Reefs of Gotland9
- Australian communities7
- Ordovician, Silurian, and Devonian corals of Alaska7
- Stromatoporaty i biostratigrafiya nizhnego paleozoya Mongolii [Stromatoporata and biostratigraphy of the Lower Paleozoic of Mongolia]4
- Tien-Shan3
- Razrez ordovika i silura reki Moiero, Sibirskaya platforma (Ordovician and Silurian sequence of the Moiero River, Siberian platform)3
- Aspects of the Silurian rugose coral fauna of the Yass region, New South Wales3
- The Silurian rocks of the Tortworth Inlier, Gloucestershire3
- Animal and plant communities of Podolia2
- Correlation of the Silurian rocks of China2
- Podolia2
Each of the 69 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. 14 further references are 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 Phaulactis
- Source
- Wikipedia/Commons
- Credit
- Oskar josefsson
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Phaulactis”
- 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 itLykophyllidae through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ryder 1926