Metacerithium packardi

via iDigBio · 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
- MetacerithiumPBDB
- Diet
- grazerPBDB, for Cerithioidea
- Life habit
- epifaunalPBDB, for Cerithioidea
- Motility
- actively mobilePBDB, for Cerithioidea
- Vision
- limitedPBDB, for Gastropoda
Time the record covers
At most 10 million years on record.
Every occurrence read is dated to somewhere between 66 Mya and 56 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
4 occurrences of Metacerithium packardi on record, most of them in the Paleocene. 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
4 occurrences- Paleocene100%
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
2 formations
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The named rock units Metacerithium packardi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Metacerithium packardi and its relatives
PaleoceneWhere Metacerithium packardi and its relatives were recorded in the Paleocene.
Found in the same rock
94 taxa- Dentalium cooperi4 sites
- Cucullaea mathewsonii3 sites
- Fusinus (Levifusus) calabasasensis3 sites
- Pseudoperissolax tricarnatus3 sites
- Retipirula crassitesta3 sites
- Turritella infragranulata pachecoensis3 sites
- Amauropsis martinezensis2 sites
- Brachysphingus gibbosus2 sites
- Chrysodomus burroensis2 sites
- Crassatella branneri2 sites
- Flabellum cuneiforme2 sites
- Mesalia martinezensis2 sites
- Pitar sinedepressa2 sites
- Polinices hornii2 sites
- Polinices susanaensis2 sites
- Surcula merriami2 sites
- Tellina (Angulus) simiensis2 sites
- Turricula2 sites
- Acila (Truncacila) decisa1 site
- Ancilla burroensis1 site
- Brachidontes (Brachidontes) lawsoni1 site
- Brachidontes (Brachidontes) susanaensis1 site
- Brachiopoda1 site
- Brachysphingus mammilatus1 site
The Paleobiology Database records 4 sites for Metacerithium packardi, 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
2 references- A contribution to the paleontology of the Martinez Eocene of California3
- Age, Correlation and Possible Tethyan Affinities of Mollusks from the Lodo Formation of Fresno County, California1
Each of the 4 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Metacerithium packardi
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Metacerithium packardi 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMetacerithium through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Nelson 1925