Micrabacia

via iDigBio · CC0 · via iDigBio. 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
- MicrabaciidaePBDB
- Diet
- microcarnivorePBDB
- Life habit
- solitaryPBDB, for Micrabaciidae
- Motility
- stationaryPBDB, for Micrabaciidae
- Vision
- blindPBDB, for Anthozoa
- Environment
- marinePBDB, for Scleractinia
Time the record covers
At least 135 million years on record.
The record covers at least 201.4 Mya to 66 Mya. No occurrence read is dated outside 205.7 Mya to 61.66 Mya.
155 occurrences of Micrabacia on record, most of them in the Late Cretaceous. 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
155 occurrences- Late Triassicunder 1%
- Early Cretaceous2%
- Late Cretaceous97%
- Paleoceneunder 1%
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
30 formations
- Providence Formation28
- Corsicana Marl Formation23
- Severn Formation13
- Peedee Formation10
- Prairie Bluff Formation · Selma Group8
- Ripley Formation · Selma Group7
Loading coastlines…
The named rock units Micrabacia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 further formations hold fewer occurrences each and are not listed. 17 occurrences have no formation on record, which is common for older literature.
Micrabacia and its relatives
Late CretaceousWhere Micrabacia and its relatives were recorded in the Late Cretaceous.
Found in the same rock
555 taxa- Nuculana67 sites
- Anomia argentaria66 sites
- Cymbophora64 sites
- Striarca63 sites
- Syncyclonema60 sites
- Crenella serica58 sites
- Cubitostrea tecticosta58 sites
- Euspira rectilabrum55 sites
- Caestocorbula (Caestocorbula) crassaplica51 sites
- Corbula51 sites
- Vertebrata51 sites
- Hamulus onyx49 sites
- Cyprimeria46 sites
- Turritella bilira45 sites
- Camptonectes bubonis44 sites
- Crassatella vadosa44 sites
- Linearis44 sites
- Turritella trilira44 sites
- Cyclorisma43 sites
- Nemodon eufaulensis43 sites
- Serpula43 sites
- Nymphalucina linearia42 sites
- Paladmete cancellaria42 sites
- Dentalium leve41 sites
The Paleobiology Database records 120 sites for Micrabacia, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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
23 references- Upper Cretaceous (Maestrichtian) larger invertebrates from the Haustator bilira Assemblage Zone in the Atlantic Coastal Plain with further data for the East Gulf38
- Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain26
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain25
- Corals of the Cretaceous of the Atlantic and Gulf Coastal Plains and Western Interior of the United States15
- North American Upper Cretaceous corals of the genus Micrabacia10
- Numerical distribution of Santonian to Danian corals (Scleractinia, Octocorallia) of southern Limburg, the Netherlands9
- Kuzmicheva, 19875
- Stratigraphy of the outcropping post-Magothy Upper Cretaceous formations in Southern New Jersey an Northern Delmarva peninsula, Delaware and Maryland5
- Fabric of the Cretaceous-Tertiary Marine Macrofaunal Transition at Braggs, Alabama3
- Die Korallen der sächsischen Oberkreide - eine Zwischenbilanz und Bemerkungen zu Korallenfaunen des Cenomans [Upper Cretaceous corals from Saxony (Germany) - interim results and notes on Cenomanian coral faunas]2
- The Black Creek-Peedee formational contact (Upper Cretaceous) in the Cape Fear river region of North Carolina2
- The palaeoecology of the Actinocamax plenus subzone (lowest Turonian) in the Anglo-Paris basin2
Each of the 155 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. 11 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 content2

Picture of Micrabacia
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Credit
- Shellie Luallin
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
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 itMicrabaciidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Milne-Edwards 1849