Timematodea
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Timematodea is a small suborder of
stick insects The Phasmatodea (also known as Phasmida or Phasmatoptera) are an order of insects whose members are variously known as stick insects, stick bugs, walkingsticks, stick animals, or bug sticks. They are also occasionally referred to as Devil's dar ...
, believed to be the earliest diverging living branch of the group. It contains only one living genus, '' Timema,'' known from the western United States, as well as two fossil genera, '' Granosicorpes'' and '' Tumefactipes'' from the early
Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...
(
Cenomanian The Cenomanian is, in the International Commission on Stratigraphy's (ICS) geological timescale, the oldest or earliest age (geology), age of the Late Cretaceous epoch (geology), Epoch or the lowest stage (stratigraphy), stage of the Upper Cretace ...
) aged
Burmese amber Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. Th ...
of Myanmar, all three of which are assigned to the family Timematidae. Another genus, '' Electrotimema'', from
Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
aged
Baltic amber Baltic amber or succinite is amber from the Baltic region, home of its largest known deposits. It was produced sometime during the Eocene epoch, but exactly when is controversial. It has been estimated that this forested region provided the re ...
, has also been assigned to the suborder, but its precise placement is uncertain, as the diagnostic features of the tarsi were cited inconsistently, so it is unclear whether they are 5-segmented or 3-segmented. A key diagnostic character of the family Timematidae is 3-segmented tarsi, and 5-segmented tarsi would suggest ''Electrotimema'' is not a timematid.


References

Phasmatodea Insect suborders {{Phasmatodea-stub