Ectomaria

Schmidt, Fr. · CC BY-NC 4.0 · via GBIF. 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
- LophospiridaePBDB
- Diet
- detritivorePBDB, for Murchisoniina
- Life habit
- epifaunalPBDB, for Murchisoniina
- Motility
- slow-movingPBDB, for Murchisoniina
- Vision
- limitedPBDB, for Murchisoniina
- Environment
- coastal,marinePBDB, for Murchisoniina
Time the record covers
At least 212 million years on record.
The record covers at least 477.1 Mya to 264.28 Mya. No occurrence read is dated outside 486.85 Mya to 259.857 Mya.
68 occurrences of Ectomaria on record, most of them in the Ordovician. 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
68 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
36 formations
- Kangaroo Creek Formation12
- Smithville Formation5
- Glenwood Formation4
- Dunleith Formation · Galena Group4
- Port Clarence Limestone Formation4
- St. Peter Sandstone Formation2
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The named rock units Ectomaria has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 further formations hold fewer occurrences each and are not listed. 2 occurrences have no formation on record, which is common for older literature.
Ectomaria and its relatives
OrdovicianWhere Ectomaria and its relatives were recorded in the Ordovician.
Found in the same rock
603 taxa- Lophospira perangulata25 sites
- Hormotoma gracilis15 sites
- Clathrospira subconica13 sites
- Trochonema umbilicata13 sites
- Ambonychiopsis12 sites
- Cyrtodonta12 sites
- Gyronema semicarinatum12 sites
- Liospira angustata12 sites
- Paraliospira supracingulata11 sites
- Tetranota sexcarinata11 sites
- Bucania sublata10 sites
- Eunema centralis10 sites
- Hormotoma gracilis angustatus10 sites
- Lophospira serrulata10 sites
- Cleionychia9 sites
- Ctenodonta9 sites
- Cymatonota9 sites
- Cyrtodontula9 sites
- Liospira vitruvia9 sites
- Lophospira milleri9 sites
- Paraliospira abrupta9 sites
- Sphenolium9 sites
- Tetranota obsoleta9 sites
- Vanuxemia9 sites
The Paleobiology Database records 58 sites for Ectomaria, 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
28 references- Stratigraphic ranges of Middle and Late Ordovician Gastropoda and Monoplacophora of Minnesota17
- Ordovician - Devonian Gastropoda from the Klamath Mountains, California12
- Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023)9
- Remarks on the genera Ectomaria, Koken, and Hormotoma, Salter, with descriptions of British species3
- Upper Ordovician gastropods from the Seward Peninsula, Alaska2
- Gastropoda and Conularida of the Ottawa Formation of the Ottawa - St. Lawrence Lowland2
- The Lower Silurian Gastropoda of Minnesota2
- Paragastropoda, Tergomya and Gastropoda (Mollusca) from the Upper Ordovician Dalby Limestone, Sweden1
- Early Ordovician gastropods of the Barbace Cove Member (Boat Harbour Formation) and Catoche Formation, western Newfoundland1
- Evolution of the Late Ordovician orthid brachiopod Gnamptorhynchos Jin, 1989 from Platystrophia King, 1850, in North America1
- A major unconformity between Upper Ordovician and Lower Devonian strata in the Nanook Limestone, Shublik Mountains, northeastern Brooks Range1
- Upper Ordovician Gastropoda from west-central Alaska1
Each of the 68 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. 16 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 Ectomaria
- Source
- GBIF
- Credit
- Schmidt, Fr.
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan of Ectomaria 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itLophospiridae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Koken 1896)