''Chresmoda'' is an extinct genus of insects within the family

Chresmodidae Chresmodidae is an extinct family of Mesozoic insects within the superorder Polyneoptera. Genera *'' Chresmoda'' Late Jurassic-Cenomanian, Worldwide *'' Jurachresmoda'' Zhang, Ren & Shih, 2008 Middle Jurassic, Jiulongshan Formation *'' Sinochresm ...

Description

''Chresmoda'' are large enigmatic insects with very long specialized legs, probably adapted for skating on the water surface similar to pond skaters. They can reach a body length of about , with a forewing length of about . Some lagre specimens could reached a size of about . These Polyneoptera of uncertain position have been considered aquatic and living on the water surface, probably predaceous on nektonic small animals. They lived during the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

of Brazil, China, Lebanon, Spain, United Kingdom, Mongolia and Myanmar, as well as in the Late Jurassic of Germany, from 150.8 to 94.3 Ma from the

Tithonian In the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 152.1 ± 4 Ma and 145.0 ± 4 Ma (million years ago). It is preceded by the K ...

to the

Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...

ages. While most species are known from

compression fossils A compression fossil is a fossil preserved in sedimentary rock that has undergone physical compression. While it is uncommon to find animals preserved as good compression fossils, it is very common to find plants preserved this way. The reason fo ...

, ''

Chresmoda chikuni ''Chresmoda'' is an extinct genus of insects within the family Chresmodidae. Description ''Chresmoda'' are large enigmatic insects with very long specialized legs, probably adapted for skating on the water surface similar to pond skaters. They ...

'' is known from well preserved 3-dimensional specimens in

amber Amber is fossilized tree resin that has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects."Amber" (2004). In Ma ...

Species

*''Chresmoda aquatica'' Martinez-Delclos, 1989

La Pedrera de Rubies Formation LA most frequently refers to Los Angeles, the second largest city in the United States. La, LA, or L.A. may also refer to: Arts and entertainment Music * La (musical note), or A, the sixth note * "L.A.", a song by Elliott Smith on ''Figure ...

and Las Hoyas, Spain,

Barremian The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 129.4 ± 1.5 Ma (million years ago) and 121.4 ± 1.0 Ma). It is a subdivision of the Early Cretaceous Epoch (or Lower Cretaceous Series). It is preceded ...

*''Chresmoda chikuni'' Zhang & Ge ''in'' Zhang ''et al.'', 2017 Burmese amber, Myanmar, Cenomanian *''Chresmoda libanica'' Nel ''et al.'', 2004

Sannine Formation The Sannine Formation, also called the Sannine Limestone, is a Cretaceous geologic formation in Lebanon. Description It is primarily Cenomanian in age. The formation laterally varies from east to west; the western lowland "coastal" sequence i ...

, Lebanon, Cenomanian *''Chresmoda multinervis'' Zhang ''et al.'', 2009

Dabeigou Formation The Dabeigou Formation is a palaeontological formation located in Hebei, China.Gurvan-Eren Formation, Mongolia,

Aptian The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), a ...

*''Chresmoda neotropica'' Engel & Heads, 2008 Crato Formation, Brazil, Aptian *''Chresmoda obscura'' Germar, 1839 Solnhofen Limestone, Germany, Tithonian: can reach a size of about . These Polyneoptera of uncertain position have been considered aquatic and terrestrial bug or phasmids. They should instead be anomalous paraplecopterids living on the water surface, probably predaceous on nektonic small animals.A. G. Ponomarenko
Fossil insects from the Tithonian «Solnhofener Plattenkalke» in the Museum of Natural History, Vienna
/ref> They lived during the

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

of Germany, from 150.8 to 145.5 Ma. *''Chresmoda orientalis'' Esaki, 1949 Yixian Formation, China, Aptian *''Chresmoda oweni'' Westwood, 1854

Purbeck Group The Purbeck Group is an Upper Jurassic to Lower Cretaceous lithostratigraphic group (a sequence of rock strata) in south-east England. The name is derived from the district known as the Isle of Purbeck in Dorset where the strata are exposed in the ...

, United Kingdom,

Berriasian In the geological timescale, the Berriasian is an age/stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 145.0 ± 4.0 Ma and 139.8 ± 3.0 Ma (million years ago) ...

*''Chresmoda shihi'' Zhang ''et al.'', 2009 Dabeigou Formation, China, Early Cretaceous

References

External links

Encyclopedia of LifeLacewing Digital Library
{{Taxonbar, from=Q18347473, from2=Q10747731 Mesozoic insects of Europe Prehistoric insect genera Polyneoptera