Astroscopus countermani

Astroscopus countermani is an extinct species of stargazer described from a cranium found in Tortonian deposits of the Calvert Cliffs of what is now Maryland. A. countermani is very similar to its living relatives.

Astroscopus countermani

Apokryltaros · CC BY-SA 3.0 · 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
AstroscopusPBDB
Motility
actively mobilePBDB, for Osteichthyes

Time the record covers

At most 4.4 million years on record.

The one occurrence read is dated to somewhere between 11.63 Mya and 7.246 Mya, which is a dating window rather than a span.

Miocene — about 1 of 1 occurrenceMiocene12–12 Mya — about 0.0 occurrences12–11 Mya — about 0.0 occurrences11–11 Mya — about 0.0 occurrences11–11 Mya — about 0.0 occurrences11–11 Mya — about 0.0 occurrences11–11 Mya — about 0.0 occurrences11–11 Mya — about 0.0 occurrences11–10 Mya — about 0.0 occurrences10–10 Mya — about 0.0 occurrences10–10.0 Mya — about 0.0 occurrences10.0–9.8 Mya — about 0.0 occurrences9.8–9.6 Mya — about 0.0 occurrences9.6–9.4 Mya — about 0.0 occurrences9.4–9.3 Mya — about 0.0 occurrences9.3–9.1 Mya — about 0.0 occurrences9.1–8.9 Mya — about 0.0 occurrences8.9–8.7 Mya — about 0.0 occurrences8.7–8.5 Mya — about 0.0 occurrences8.5–8.4 Mya — about 0.0 occurrences8.4–8.2 Mya — about 0.0 occurrences8.2–8.0 Mya — about 0.0 occurrences8.0–7.8 Mya — about 0.0 occurrences7.8–7.6 Mya — about 0.0 occurrences7.6–7.5 Mya — about 0.0 occurrences7.5–7.3 Mya — about 0.0 occurrences7.3–7.1 Mya — about 0.0 occurrences12.1 Mya6.7 Mya

1 occurrence of Astroscopus countermani on record, most of them in the Miocene. 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

1 occurrences

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

1 formation

St. Marys — 38.32°N, 76.43°W

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The named rock units Astroscopus countermani has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Astroscopus countermani and its relatives

Miocene

Where Astroscopus countermani and its relatives were recorded in the Miocene.

Found in the same rock

3 taxa

The Paleobiology Database records 1 site for Astroscopus countermani, and this reads all of them. The number is how many of those sites it was catalogued from too.

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

1 reference

Each of the 1 occurrence 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Astroscopus countermani

Credit
Apokryltaros
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Astroscopus countermani was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

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 itAstroscopus through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Carnevale et al. 2011