Xitus spicularius
No picture of Xitus spicularius was found. Wikidata and iDigBio were searched and had none. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Xitus spicularius, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- XitusPBDB
Time the record covers
At least 77 million years on record.
The record covers at least 161.5 Mya to 83.6 Mya. No occurrence read is dated outside 165.3 Mya to 72.2 Mya.
115 occurrences of Xitus spicularius on record, most of them in the Early 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
115 occurrences- Middle Jurassicunder 1%
- Late Jurassic20%
- Early Cretaceous63%
- Late Cretaceous16%
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
16 formations
- Maiolica Formation34
- Oberalmer Schichten Formation14
- Scaglia Bianca Formation9
- Wahrah Formation8
- Schrambach-Schichten Formation4
- Schrambach-Schichten Formation3
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The named rock units Xitus spicularius has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 occurrences have no formation on record, which is common for older literature.
Xitus spicularius and its relatives
Early CretaceousWhere Xitus spicularius and its relatives were recorded in the Early Cretaceous.
Found in the same rock
463 taxa- Tethysetta boesii60 sites
- Acastea diaphorogona55 sites
- Angulobracchia portmanni55 sites
- Archaeodictyomitra apiarium53 sites
- Deviatus diamphidius53 sites
- Tritrabs ewingi53 sites
- Acaeniotyle umbilicata51 sites
- Syringocapsa51 sites
- Alievium helenae50 sites
- Acanthocircus trizonalis48 sites
- Homoeoparonaella47 sites
- Sethocapsa leiostraca47 sites
- Sethocapsa trachyostraca45 sites
- Sethocapsa dorysphaeroides43 sites
- Pseudodictyomitra carpatica41 sites
- Paronaella tubulata40 sites
- Suna echiodes40 sites
- Archaeodictyomitra excellens39 sites
- Pantanellium squinaboli39 sites
- Halesium38 sites
- Archaeodictyomitra lacrimula37 sites
- Sethocapsa37 sites
- Wrangellium puga37 sites
- Sethocapsa kaminogoensis36 sites
The Paleobiology Database records 102 sites for Xitus spicularius, 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
18 references- Early Cretaceous Radiolarian Biostratigraphy of Umbria-Marche Apennines (Italy), Southern Alps (Italy and Switzerland) and Hawasina Nappes (Oman)34
- Systematik, Stratigraphie und Palökologie der Radiolarien des Oberjura-Unterkreide-Grenzbereiches im Osterhorn-Tirolikum (Nördliche Kalkalpen, Salzburg und Bayern)21
- Late Jurassic to Early Cretaceous Radiolaria from chert blocks in th Lubok Antu melange, Sarawak, Malaysia13
- Palökologische Verwertbarkeit oberjurassisch-unterkretazischer Radiolarienfaunen mit Beispielen aus Antarktis, Oman und Südalpen13
- Radiolarian biostratigraphy for transitional facies of chert-clastic sequence of the Taukha Terrane in the Koreyskaya River area, southern Sikhote-Alin, Russia10
- Biochronology an Paleontology of Mid-Cretaceous Radiolarians from Northern Apennines (Italy) and Betic Cordillera (Spain)9
- The Radiolarian biotic response during OAE2. A high resolution study across the Bonarelli Level at Bottaccione (Gubbio, Italy)3
- Jurassic and Early Cretaceous Radiolaria of the Lower Amurian Terrane: Khabarovsk region, Far East of Russia2
- New Data on Albian–Coniacian Radiolarians from the Kelevudag Section (Northeastern Azerbaijan)1
- Cenomanian to Santonian radiolarian biostratigraphy, carbon isotope stratigraphy and paleoenvironments of the Sverdrup Basin, Ellef Ringnes Island, Nunavut, Canada1
- Radiolarien-Faunen und Obergrenze der Amden-Formation (Coniacium-Santonium) im Tölzer Helvetikum (Oberbayern) [Radiolarian fauna and upper boundary of the Amden Formation (Coniacian-Santonian) in the Tölz Helvetikum (Upper Bavaria)]1
- Radiolaria from the Upper Cenomanian - Lower Turonian deposits of the Silesian Unit (Polish Flysch Carpathians)1
Each of the 115 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. 6 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 content0
No picture of Xitus spicularius was found. Wikidata and iDigBio were searched and had none.
Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Xitus spicularius, or no answer at all. This entry cannot say which.
No 3D scan of Xitus spicularius 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 itXitus through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Aliev 1961)