Apatopygus
Apatopygus is a genus of echinoderms belonging to the family Apatopygidae.

Javier · CC BY 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
- ApatopygidaePBDB
- Diet
- grazer, deposit feederPBDB, for Echinoidea
- Life habit
- epifaunalPBDB, for Echinoidea
- Motility
- actively mobilePBDB, for Echinoidea
- Vision
- limitedPBDB, for Echinoidea
- Environment
- marinePBDB, for Echinodermata
Time the record covers
At most 4 million years on record.
Every occurrence read is dated to somewhere between 56 Mya and 52 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
6 occurrences of Apatopygus on record, most of them in the Eocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
6 occurrences- Eocene100%
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
3 formations
- Te Whanga Limestone Formation · Kekerione Group3
- Red Bluff Tuff Formation · Kekerione Group2
- Tumaio Limestone Formation · Tioriori Group1
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The named rock units Apatopygus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Apatopygus and its relatives
EoceneWhere Apatopygus and its relatives were recorded in the Eocene.
Found in the same rock
63 taxa- Notostrea6 sites
- Eucidaris5 sites
- Eburneopecten3 sites
- Serripecten tiorioriensis3 sites
- Spondylus3 sites
- Terebratella3 sites
- Arca2 sites
- Chlamys2 sites
- Chlamys mercuria2 sites
- Eutrephoceras allani2 sites
- Limatula (Limatuletta)2 sites
- Novocrania2 sites
- Pectinidae2 sites
- Perotrochus2 sites
- Pratulum2 sites
- Pycnodonte (Crenostrea)2 sites
- Acesta1 site
- Acesta (Acesta)1 site
- Argyrotheca1 site
- Aturia mackayi1 site
- Barbatia1 site
- Bathylasma rangatira1 site
- Brachidontes (Hormomya)1 site
- Cardiaster1 site
The Paleobiology Database records 6 sites for Apatopygus, 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- Cretaceous-Cenozoic geology and biostratigraphy of the Chatham Islands, New Zealand5
- Tertiary Irregular Echinoids from the Chatham Islands, New Zealand1
Each of the 6 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 Apatopygus
- Source
- Wikipedia/Commons
- Credit
- Javier
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Apatopygus 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.
The description on this site
- Source
- Wikipedia, “Apatopygus”
- 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 itApatopygidae through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hawkins 1920