Mactromeris catilliformis

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- Also called
- narrow dish surfclamPBDB
- Sits inside
- MactromerisPBDB
- Diet
- suspension feederPBDB, for Mactridae
- Life habit
- infaunalPBDB, for Mactridae
- Motility
- facultatively mobilePBDB, for Mactridae
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 15 million years on record.
The record covers at least 15.98 Mya to 129 ka. No occurrence read is dated outside 23.04 Mya to 11.7 ka.
34 occurrences of Mactromeris catilliformis on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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
34 occurrences- Miocene29%
- Pliocene15%
- Pleistocene56%
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
10 formations
- Palos Verdes Sand Formation9
- Careaga Sandstone Formation7
- Vaqueros Formation5
- Fernando Formation2
- Pancho Rico Formation2
- Merced Formation1
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The named rock units Mactromeris catilliformis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.
Mactromeris catilliformis and its relatives
PleistoceneWhere Mactromeris catilliformis and its relatives were recorded in the Pleistocene.
Found in the same rock
963 taxa- Cryptomya californica19 sites
- Tresus nuttallii18 sites
- Saccella taphria17 sites
- Callianax biplicata16 sites
- Macoma nasuta15 sites
- Panopea generosa15 sites
- Glossaulax reclusiana14 sites
- Leporimetis obesa14 sites
- Caesia fossatus13 sites
- Caesia perpinguis13 sites
- Euspira lewisii13 sites
- Mitrella gausapata13 sites
- Saxidomus nuttalli13 sites
- Callithaca tenerrima12 sites
- Glycymeris septentrionalis12 sites
- Leukoma staminea12 sites
- Lucinisca nuttalli12 sites
- Rexithaerus secta12 sites
- Tivela (Pachydesma) stultorum12 sites
- Acteocina culcitella11 sites
- Californiconus californicus11 sites
- Crepidula onyx11 sites
- Dentalium neohexagonum11 sites
- Turritella cooperi11 sites
The Paleobiology Database records 33 sites for Mactromeris catilliformis, 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
16 references- Geology and paleontology of the Santa Maria District California7
- The Vaqueros Formation, Lower Miocene of California. I. Paleontology5
- The paleontology of the Pleistocene molluscan fauna of the Newport Bay area, California4
- The Paleontology and Stratigraphy of the Marine Pliocene and Pleistocene of San Pedro, California4
- Pancho Rico Formation, Salinas Valley2
- Tertiary faunal horizons of western Washington2
- The Geology and Paleontology of the Marine Pliocene of San Diego, California (Paleontology: Pelecypoda)1
- Late Pliocene mollusks from San Francisco Peninsula, California, and their paleogeographic significance1
- Upper Pleistocene Mollusca from Potrero Canyon, Pacific Palisades, California1
- A Pleistocene invertebrate fauna from the southwest corner of San Diego County, California1
- Geology of Reef Ridge Coalinga district California1
- An Upper Pleistocene fauna from the Baldwin Hills, Los Angeles County, California1
Each of the 34 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. 4 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 Mactromeris catilliformis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Mactromeris catilliformis 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 itMactromeris through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1867)