Rossodus
Rossodus is an extinct genus of conodonts in the clade Prioniodontida, the "complex conodonts", of the Early Ordovician.

USGS · Public Domain · 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
- OistodontidaePBDB
- Diet
- carnivorePBDB, for Conodonta
- Life habit
- nektonicPBDB, for Conodonta
- Motility
- actively mobilePBDB, for Conodonta
- Vision
- well-developedPBDB, for Conodonta
Time the record covers
At least 14 million years on record.
The record covers at least 483.4 Mya to 469.4 Mya. No occurrence read is dated outside 488.9 Mya to 458.2 Mya.
66 occurrences of Rossodus on record, most of them in the Ordovician. 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
66 occurrences- Cambrianunder 1%
- Ordovician99%
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
18 formations
- Kechika Formation25
- San Juan Formation8
- Stonehenge Formation6
- Bliss Sandstone Formation6
- Dumugol Formation · Taebaek Group4
- Tribes Hill Formation · Beekmantown Group3
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The named rock units Rossodus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Rossodus and its relatives
OrdovicianWhere Rossodus and its relatives were recorded in the Ordovician.
Found in the same rock
116 taxa- Variabiloconus bassleri23 sites
- Cordylodus angulatus21 sites
- Cordylodus intermedius18 sites
- Acanthodus lineatus16 sites
- Drepanoistodus13 sites
- Acanthodus uncinatus12 sites
- Laurentoscandodus triangularis12 sites
- Acodus similaris11 sites
- Cordylodus lindstromi11 sites
- Ansella jemtlandica9 sites
- Cornuodus longibasis9 sites
- Drepanoistodus costatus9 sites
- Fahraeusodus9 sites
- Lenodus variabilis9 sites
- Loxodus bransoni9 sites
- Parapaltodus9 sites
- Periodon macrodentatus9 sites
- Protopanderodus9 sites
- Semiacontiodus9 sites
- Ansella8 sites
- Erraticodon8 sites
- Paroistodus horridus8 sites
- Paroistodus originalis8 sites
- Pteracontiodus8 sites
The Paleobiology Database records 47 sites for Rossodus, 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- Taxonomy, Evolution, and Biostratigraphy of Conodonts: from the Kechika Formation, Skoki Formation, and Road River Group (Upper Cambrian to Lower Silurian)24
- Conodont biostratigraphy and global correlation of the middle Darriwilian-lower Sandbian (Ordovician) Las Aguaditas Formation, Precordillera of San Juan, Argentina9
- High-resolution trilobite and conodont biostratigraphy across the Cambrian-Ordovician boundary in south-central New Mexico6
- Latest Cambrian and Earliest Ordovician conodonts from the Conococheague and Stonehenge limestones of northwestern Virginia6
- Some trans-Iapetus conodont faunal connections in the Tremadocian4
- Conodonts, Stratigraphy, and Relative Sea-Level Changes of the Tribes Hill Formation (Lower Ordovician, East-Central New York)3
- Early Ordovician conodonts from the Dumugol Formation in the Baegunsan Syncline, eastern Yeongweol and Samcheog areas, Kangweon-Do, Korea3
- Cambrian and Ordovician stratigraphy, conodont biostratigraphy, and microfacies analysis to support 1:24,000-scale geologic mapping of the southern Lake Champlain valley, New York and Vermont2
- Ordovician conodonts from the Bliss Sandstone in its type area, west Texas2
- Relatively deep subtidal microbial–lithistid sponge reef communities in Lower Ordovician rocks reveal early escalation of the Great Ordovician Biodiversification Event1
- Middle Cambrian to Lower Ordovician faunas from the Chingiz Mountain Range, central Kazakhstan1
- Conodontes de la Formación Rupasca (Ordovícico Inferior) en el Angosto de Chucalezna, Cordillera Oriental de Jujuy: nuevos elementos bioestratigráficos para una localidad clásica del noroeste argentino1
Each of the 66 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 Rossodus
- Source
- Wikipedia/Commons
- Credit
- USGS
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Rossodus”
- 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 itOistodontidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Repetski and Ethington 1983