Anguidae
Anguidae refers to a large and diverse family of lizards native to the Northern Hemisphere. It contains 9 genera and 89 extant species. Common characteristics of this group include a reduced supratemporal arch, striations on the medial faces of tooth crowns, osteoderms, and a lateral fold in the skin of most taxa. The group is divided into two living subfamilies, the legless Anguinae, which contains slow worms and glass lizards, among others, found across the Northern Hemisphere, and Gerrhonotinae, which contains the alligator lizards, native to North and Central America. The family Diploglossidae was also formerly included.

Uncredited · 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
- AnguioideaPBDB
- Diet
- insectivore, carnivorePBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Amniota
Time the record covers
At least 113 million years on record.
The record covers at least 113.2 Mya to 11.7 ka. No occurrence read is dated outside 119.57 Mya to 0 Mya.
1,123 occurrences of Anguidae on record, most of them in the Eocene. 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
1,123 occurrences- Early Cretaceousunder 1%
- Late Cretaceous7%
- Paleocene7%
- Eocene37%
- Oligocene7%
- Miocene26%
- Pliocene5%
- Pleistocene10%
- Holocene1%
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
141 formations
- Willwood Formation60
- Wasatch Formation39
- Fort Union Formation36
- Bridger Formation31
- Chadron Formation · White River Group28
- Friars Formation · La Jolla Group20
Loading coastlines…
The named rock units Anguidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 117 further formations hold fewer occurrences each and are not listed. 481 occurrences have no formation on record, which is common for older literature.
Anguidae and its relatives
EoceneWhere Anguidae and its relatives were recorded in the Eocene.
Found in the same rock
3,492 taxa- Ophisaurus48 sites
- Aves43 sites
- Trionychidae42 sites
- Anura38 sites
- Crocodylia38 sites
- Odaxosaurus piger38 sites
- Lepisosteus36 sites
- Scapherpeton tectum31 sites
- Opisthotriton kayi30 sites
- Allognathosuchus28 sites
- Champsosaurus27 sites
- Ectocion osbornianus26 sites
- Lepisosteus occidentalis25 sites
- Melanosaurus maximus24 sites
- Osteichthyes23 sites
- Baenidae22 sites
- Rana22 sites
- Chiroptera21 sites
- Teleostei21 sites
- Hadrosauridae20 sites
- Paronychodon20 sites
- Habrosaurus dilatus19 sites
- Myledaphus bipartitus19 sites
- Serpentes19 sites
The Paleobiology Database records 722 sites for Anguidae, 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
306 references- Evolution des lézards du Paléogène en Europe93
- Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae)66
- Body size estimation from isolated fossil bones reveals deep time evolutionary trends in North American lizards38
- Summary of known occurrences of terrestrial vertebrates from Eocene strata of southern California27
- Pleistocene Amphibians and Reptiles in Britain and Europe25
- A transitional Paleocene-Eocene reptile fauna from the Bighorn Basin, Wyoming19
- Fossil lizards of North America19
- First record of fossil anguines (Squamata; Anguidae) from the Oligocene and Miocene of Turkey18
- Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary17
- Late Cainozoic localities of snakes and lizards of Ukraine17
- Amphibians and Squamates from the Miocene of Felsőtárkány Basin, N-Hungary15
- New material of Ophisaurus, Anguis and Pseudopus (Squamata, Anguidae, Anguinae) from the Miocene of the Czech Republic and Germany and systematic revision and palaeobiogeography of the Cenozoic Anguinae13
Each of the 1,123 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. 294 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 Anguidae
- Source
- Wikipedia/Commons
- Credit
- nobody named on the record
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- ?Anguidae indet. · UP:Villeveyrac:UP.VIL.2006.11
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, “Anguidae”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
Everything alive alongside itAnguioidea through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1825