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Animals can be ephemeral, with brine shrimp and the mayfly being examples. The placenta is considered an ephemeral organ present during gestation and pregnancy . Ephemerality is a component of olfaction , breathing, speech and memory, aligned with permanency in the latter.
Ephemerids are generally quite large mayflies (up to 35 mm) with either two or three very long tails. Many species have distinctively patterned wings. [2] They breed in a wide range of waters, usually requiring a layer of silt as the nymphs have strong legs which are adapted for burrowing (the group is sometimes known as burrowing mayflies).
This application of ephemera has been cited as the first example of aligning it with transient prints. [8] Ephemeral, by the mid-19th century, began to be used to generically refer to printed items. [3] Ephemera and ephemerality have mutual connotations of "passing time, change, and the philosophically ultimate vision of our own existence". [9]
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Ephemera is a genus of mayfly in the family Ephemeridae. It contains the following species: Ephemera annandalei; Ephemera blanda; Ephemera brunnea; Ephemera compar;
Meaning: bird, of a bird respectively. "ornith-" and "ornitho-" are generally used for animals with birdlike characteristics; the suffix "-ornis" is generally applied to fossil bird species. Examples: ornithischian ("bird-hipped"); Ornithocheirus ("bird-hand"); Eoconfuciusornis ("dawn bird of Confucius ")
Medieval bestiaries contained detailed descriptions and illustrations of species native to Western Europe, exotic animals and what in modern times are considered to be imaginary animals. Descriptions of the animals included the physical characteristics associated with the creature, although these were often physiologically incorrect, along with ...
The plesiomorphic absence of wing-folding does not necessarily mean the Palaeoptera form a natural group – they may be an assemblage containing all insects, closely related or not, that "are not Neoptera", an example of a wastebasket taxon. If the extinct lineages are taken into account, it is likely that the concept of Palaeoptera will ...