Rhabdocidaris

Vassil · CC0 · via Wikidata/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
- RhabdocidaridaePBDB
- Diet
- grazer, omnivorePBDB, for Cidaroida
- Life habit
- low-level epifaunalPBDB, for Cidaroida
- Motility
- slow-movingPBDB, for Cidaroida
- Vision
- limitedPBDB, for Echinoidea
- Environment
- marinePBDB, for Cidaroida
Time the record covers
At least 213 million years on record.
The record covers at least 237 Mya to 23.04 Mya. No occurrence read is dated outside 239.48 Mya to 15.98 Mya.
131 occurrences of Rhabdocidaris on record, most of them in the Late Jurassic. 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
131 occurrences- Middle Triassicunder 1%
- Late Triassic5%
- Early Jurassicunder 1%
- Middle Jurassic31%
- Late Jurassic35%
- Early Cretaceous19%
- Eocene6%
- Oligoceneunder 1%
- Mioceneunder 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
32 formations
- Dhruma Formation · Shaqra Group22
- Cassian Formation · Wegen Group6
- St-Ursanne Formation5
- Tuwaiq Mt.Lst. Formation · Shaqra Group3
- Marnes de Foncouverte Formation3
- Mt. Lysa Formation · Holy Cross Mountains Group3
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The named rock units Rhabdocidaris has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 further formations hold fewer occurrences each and are not listed. 51 occurrences have no formation on record, which is common for older literature.
Rhabdocidaris and its relatives
Late JurassicWhere Rhabdocidaris and its relatives were recorded in the Late Jurassic.
Found in the same rock
1,722 taxa- Holectypus19 sites
- Cidaris18 sites
- Actinostreon gregarea16 sites
- Chlamys15 sites
- Pseudocidaris14 sites
- Acrosalenia13 sites
- Montlivaltia13 sites
- Nanogyra (Nanogyra) nana13 sites
- Pygurus12 sites
- Exogyra11 sites
- Millericrinus11 sites
- Nautiloculina11 sites
- Thracia11 sites
- Toxaster11 sites
- Arcomytilus10 sites
- Bothryopneustes10 sites
- Gryphaea costellata10 sites
- Trocholina10 sites
- Ceratomyopsis arabica9 sites
- Chlamys curvivarians9 sites
- Homomya gibbosa9 sites
- Modiolus (Modiolus) imbricatus9 sites
- Pecten9 sites
- Pholadomya lirata9 sites
The Paleobiology Database records 114 sites for Rhabdocidaris, 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
50 references- Le Jurassique D`Arabie Centrale26
- Recherches géologiques sur le Crétacé inférieur de l'Estremadura (Portugal)16
- British Jurassic regular echinoids. Part 1, Introduction, Cidaroida, Echinothurioida, Aspidodiadematoida and Pedinoida11
- Lower Kimmeridgian echinoids of Poland8
- Les Terebratulidés de l'Oxfordien du Jura et de la bordure sud du Bassin de Paris6
- The cidaroids from the Middle Oxfordian St-Ursanne Formation of the Swiss Jura Mountains5
- Primary collection data of Cassian Formation used for publication of Fürsich and Wendt (1977) (ref. 9188)4
- L'Oxfordien moyen et supérieur de l'Est du Bassin Parisien (France). L'exemple de Latrecey (Haute-Marne): aspects fauniques, paléoenvironnementaux et stratigraphiques3
- Echinides éocènes et miocènes du Qatar (Golfe Persique)3
- Catalogue descriptif des fossiles nummulitiques de l'Aude et de l'Hérault. Deuxième partie: Corbières septentrionales3
- Jura Vaudois et Neuchatelois3
- Die Cidaroiden (Echinoidea, Echinodermata) des Sornetan-und des Liesberg-Members der Bärschwil-Formation (mittleres Oxfordien, Nordwestschweizer Jura)2
Each of the 131 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. 38 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 Rhabdocidaris
- Source
- Wikidata/Commons
- Credit
- Vassil
- Licence
- CC0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- Licence
- CC0 Public Domain
- Commercial use
- the licence allows it
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 itRhabdocidaridae through timeFormations of the Late JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Desor 1855