Batrachia
The Batrachia are a clade of amphibians that includes frogs and salamanders, but not caecilians nor the extinct allocaudates. The name Batrachia was first used by French zoologist Pierre André Latreille in 1800 to refer to frogs, but has more recently been defined in a phylogenetic sense as a node-based taxon that includes the last common ancestor of frogs and salamanders and all of its descendants. The idea that frogs and salamanders are more closely related to each other than either is to caecilians is strongly supported by morphological and molecular evidence; they are, for instance, the only vertebrates able to raise and lower their eyes. However, an alternative hypothesis exists in which salamanders and caecilians are each other's closest relatives as part of a clade called the Procera, with frogs positioned as the sister taxon of this group.

LiquidGhoul · 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
- LissamphibiaPBDB
- Diet
- carnivorePBDB, for Temnospondyli
- Life habit
- amphibiousPBDB, for Temnospondyli
- Motility
- actively mobilePBDB, for Temnospondyli
- Environment
- brackish,freshwater,terrestrialPBDB, for Tetrapoda
Time the record covers
At least 248 million years on record.
The record covers at least 248.6 Mya to 11.7 ka. No occurrence read is dated outside 251.902 Mya to 0 Mya.
3,981 occurrences of Batrachia on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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
3,981 occurrences- Early Triassicunder 1%
- Middle Triassicunder 1%
- Late Triassicunder 1%
- Early Jurassicunder 1%
- Middle Jurassic1%
- Late Jurassic1%
- Early Cretaceous4%
- Late Cretaceous25%
- Paleocene3%
- Eocene5%
- Oligocene3%
- Miocene18%
- Pliocene7%
- Pleistocene30%
- Holocene2%
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
364 formations
- Hell Creek Formation · Montana Group200
- Dinosaur Park Formation · Belly River Group118
- Alamosa Formation90
- Lance Formation79
- Oldman Formation · Belly River Group63
- Fort Union Formation58
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The named rock units Batrachia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 340 further formations hold fewer occurrences each and are not listed. 1,713 occurrences have no formation on record, which is common for older literature.
Batrachia and its relatives
PleistoceneWhere Batrachia and its relatives were recorded in the Pleistocene.
Found in the same rock
3,488 taxa- Rana69 sites
- Anura58 sites
- Ambystoma tigrinum40 sites
- Bufo38 sites
- Trionychidae36 sites
- Aves34 sites
- Scapherpeton tectum31 sites
- Mimomys30 sites
- Equus29 sites
- Lepisosteus occidentalis29 sites
- Myledaphus bipartitus29 sites
- Opisthotriton kayi26 sites
- Teleostei26 sites
- Beremendia fissidens25 sites
- Squamata25 sites
- Ophidia24 sites
- Belonostomus longirostris23 sites
- Osteichthyes23 sites
- Theropoda23 sites
- Apodemus21 sites
- Geomys21 sites
- Citellus20 sites
- Lepisosteus20 sites
- Microtus20 sites
The Paleobiology Database records at least 827 sites for Batrachia, and this reads 240 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
899 references- Pleistocene Amphibians and Reptiles in Britain and Europe350
- Mesozoic and Palaeocene lissamphibian assemblages of North America: a comprehensive review145
- Middle Pleistocene (late Irvingtonian: Nebraskan) climatic changes in south-central Colorado86
- Fossil Vertebrate Collections66
- Vertebrate microsite assemblages (exclusive of mammals) from the Foremost and Oldman Formations of the Judith River Group (Campanian) of southeastern Alberta: an illustrated guide57
- Paleontology of the Judith River Formation (Campanian) of Dinosaur National Park, Alberta, Canada: evidence from vertebrate microfossil locality55
- Pleistocene vertebrate faunas of Hungary52
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota50
- Amphibians and squamate reptiles from the late Miocene of Fălciu (Eastern Romania)47
- Salientia40
- Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming38
- New diverse amphibian and reptile assemblages from the late Neogene of northern Greece provide novel insights into the emergence of extant herpetofaunas of the southern Balkans37
Each of the 3,981 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. 887 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 Batrachia
- Source
- Wikipedia/Commons
- Credit
- LiquidGhoul
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Batrachia 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
- Source
- Wikipedia, “Batrachia”
- 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 itLissamphibia through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Macartney 1802)