Anisoptera
A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of dragonflies are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterised by a pair of large, multifaceted, compound eyes, two pairs of strong, transparent wings, sometimes with coloured patches, and an elongated body. Many dragonflies have brilliant iridescent or metallic colours produced by structural coloration, making them conspicuous in flight. An adult dragonfly's compound eyes have nearly 24,000 ommatidia each.

Charles J. Sharp · CC BY-SA 4.0 · 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- Also called
- true dragonflyPBDB
- Sits inside
- NeoanisopteraPBDB
- Diet
- carnivore, insectivorePBDB, for Odonata
- Life habit
- volantPBDB, for Odonata
- Motility
- fast-movingPBDB, for Odonata
- Vision
- well-developedPBDB, for Odonata
- Environment
- freshwater,terrestrialPBDB, for Odonata
Time the record covers
At least 182 million years on record.
The record covers at least 182.9 Mya to 11.7 ka. No occurrence read is dated outside 184.2 Mya to 0 Mya.
675 occurrences of Anisoptera on record, most of them in the Early Cretaceous. 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
675 occurrences- Early Jurassicunder 1%
- Middle Jurassicunder 1%
- Late Jurassic18%
- Early Cretaceous29%
- Late Cretaceous4%
- Paleocene3%
- Eocene11%
- Oligocene9%
- Miocene23%
- Pliocene1%
- Pleistoceneunder 1%
- Holoceneunder 1%
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
95 formations
- Solnhofen Formation97
- Crato Formation · Santana Group87
- Yixian Formation · Jehol Group44
- Gessoso-solfifera Formation25
- Bouldnor Formation · Solent Group16
- Upper Freshwater-Molasse Formation15
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The named rock units Anisoptera has been recovered from, largest first. Drawn where the rock is now, not where it formed. 71 further formations hold fewer occurrences each and are not listed. 136 occurrences have no formation on record, which is common for older literature.
Anisoptera and its relatives
Early CretaceousWhere Anisoptera and its relatives were recorded in the Early Cretaceous.
Found in the same rock
6,198 taxa- Cymatophlebia longialata23 sites
- Formicidae21 sites
- Libellulidae16 sites
- Coleoptera14 sites
- Curculionidae14 sites
- Elateridae11 sites
- Isophlebia aspasia11 sites
- Mesuropetala muensteri11 sites
- Aeshnidae10 sites
- Insecta10 sites
- Protolindenia antiqua10 sites
- Thripidae10 sites
- Zygoptera10 sites
- Eumorbaeschna jurassica9 sites
- Urogomphus giganteus9 sites
- Acrididae8 sites
- Aeschnidiidae8 sites
- Ichneumonidae8 sites
- Lygaeidae8 sites
- Tarsophlebia eximia8 sites
- Aeschnogomphus intermedius7 sites
- Bibio7 sites
- Bibionidae7 sites
- Cerambycidae7 sites
The Paleobiology Database records 335 sites for Anisoptera, 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
276 references- A revision and phylogenetic study of Mesozoic Aeshnoptera, with description of numerous new taxa (Insecta: Odonata: Anisoptera)75
- Additions to the fossil dragonfly fauna from the Lower Cretaceous Crato Formation of Brazil (Insecta: Odonata)20
- Martill et al., 200720
- Dragonflies and damselflies (Insecta: Odonata) from the Late Eocene of the Isle of Wight15
- A revision of the fossil petalurid dragonflies (Insecta: Odonata: Anisoptera: Petalurida)15
- Les Aeshnidae fossiles: Etat actuel des connaissances (Odonata, Anisoptera)12
- Heer, 184912
- Zhang, 198911
- Jurassic insects from Solenhofen in the Carnegie Museum and the Museum of Comparative Zoology11
- Les Libellulidae fossiles. Un inventaire critique (Odon., Anisoptera, Libelluloidea)10
- Fossil dragonflies (Odonata: Anisoptera)from the early Eocene Okanagan Highlands, western North America9
- New fossil Odonata from the European Cenozoic (Insecta: Odonata: Thaumatoneuridae, Aeshnidae, Idionychidae, Libellulidae)9
Each of the 675 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. 264 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 Anisoptera
- Source
- Wikipedia/Commons
- Credit
- Charles J. Sharp
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Anisoptera 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.
The description on this site
- Source
- Wikipedia, “Dragonfly”
- 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 itNeoanisoptera through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Selys-Longchamps and Hagen 1854)