
1) Ancestral zebra 2) Equid 3) Equine 4) Equus quagga
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https://www.crosswordclues.com/clue/quagga

The quagga (ɑː or ə) (Equus quagga quagga) is an extinct subspecies of the plains zebra that lived in South Africa until the nineteenth century. It was long thought to be a distinct species, but recent genetic studies have shown it to be the southernmost subspecies of the plains zebra. It is considered particularly close to Burchell`s zebra. I....
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http://en.wikipedia.org/wiki/Quagga
[software] Quagga is a network routing software suite providing implementations of Open Shortest Path First (OSPF), Routing Information Protocol (RIP), Border Gateway Protocol (BGP) and IS-IS for Unix-like platforms, particularly GNU/Linux, Solaris, FreeBSD and NetBSD. Quagga is distributed under the terms of the GNU General Public License ...
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http://en.wikipedia.org/wiki/Quagga_(software)

extinct African wild ass like the zebra
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http://phrontistery.info/q.html

• (n.) A South African wild ass (Equus, / Hippotigris, quagga). The upper parts are reddish brown, becoming paler behind and behind and beneath, with dark stripes on the face, neck, and fore part of the body.
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http://thinkexist.com/dictionary/meaning/quagga/

(from the article `zebra`) ...between the main stripes. The northern races of this species are more fully striped than the southern ones, in which the striping of the lower ...
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http://www.britannica.com/eb/a-z/q/3

African species of zebra (q.v.).
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http://www.britannica.com/eb/a-z/q/3

The Quagga is a recently-extinct relative of the zebra and the horse.
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http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
Quag'ga noun [ Hottentot.]
(Zoology) A South African wild ass (
Equus, or Hippotigris, quagga ). The upper parts are reddish brown, becoming paler behind and behind and beneath, with dark stripes on the face, neck, and fore part of the body.
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http://www.encyclo.co.uk/webster/Q/3

The quagga or couagga (Equus quagga) was an African horse-like mammal related to the zebra. In colour they resembled the ass, but differed in having short ears and in the arrangement of the hairs on the tail, which were similar to those of a horse. The body was a generally reddish-brown colour. The head, neck and anterior half of the body were stri...
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http://www.probertencyclopaedia.com/browse/BQ.HTM

[
n] - mammal of South Africa that resembled a zebra
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http://www.webdictionary.co.uk/definition.php?query=quagga
Equus quagga noun mammal of South Africa that resembled a zebra; extinct since late 19th century
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https://www.encyclo.co.uk/local/20974

an extinct equine mammal, Equus quagga, of southern Africa, related to and resembling the zebra, but striped only on the forepart of the body and the head.
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https://www.infoplease.com/dictionary/quagga
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