''Tachypleus'' is a genus of
south
South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both west and east.
Etymology
The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...
,
southeast
The points of the compass are a set of horizontal, Radius, radially arrayed compass directions (or Azimuth#In navigation, azimuths) used in navigation and cartography. A ''compass rose'' is primarily composed of four cardinal directions—north, ...
and
east Asia
East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...
n horseshoe crabs in the family
Limulidae.
Species
There are two extant (living) species:
* ''
Tachypleus gigas''
(Müller
Müller may refer to:
Companies
* Müller (company), a German multinational dairy company
** Müller Milk & Ingredients, a UK subsidiary of the German company
* Müller (store), a German retail chain
* GMD Müller, a Swiss aerial lift manufacturi ...
, 1785)
* ''
Tachypleus tridentatus''
( Leach, 1819)
And two extinct species only known from fossil.
* ''
Tachypleus decheni''
(Zincken, 1862) Upper
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 ...
Domsen Sands, Germany
* ''
Tachypleus syriacus''
(Woodward, 1879) Upper Cretaceous (
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 ...
) Haqel and
Hjoula Konservat-Lagerstatten, Lebanon
References
External links
*
Xiphosura
Extant Cenomanian first appearances
Chelicerate genera
Taxonomy articles created by Polbot
{{Chelicerata-stub