Sciuromorpha
| Sciuromorpha | |
|---|---|
 | |
| Sailkapen zientifikoa | |
| Filuma | Chordata |
| Klasea | Mammalia |
| Ordena | Rodentia |
| Subordena | Sciuromorpha Fischer von Waldheim, 1817
|
| Familiak | |
Sciuromoprha karraskari talde ezberdinei eman zaien izena da. Historikoki egon diren sailkapen guztietan egonkor mantendu den familia bakarra Sciuridae da, kattagorriena. Definizio gehienek, gainera, kastoreak ere sartu dituzte talde honetan.
Tradizionalki kanal infraorbitalaren formarekin definitu da. Sciuromorphak duen sistema zigomaseterikoak duen berezitasuna alboko muskulu maseteroa aurpegiaren aldetan finkatzen dela da. Hystricomorphak eta Myomorphak ez bezala erdiko muskulu maseteroa ez da kanal infraorbitalaren barnetik igarotzen. Ezaugarri hauek ikusita honako familia hauek daude subordena honen barruan:
Horretaz gain Geomyidae eta Heteromyidae ere sar daitezke, nahiz eta muskulu maseteroaren lotura arku zigomatikoaren atzean zehazki egin.
| Autoritate kontrola |
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Datuak: Q724477
Espezieak: Sciuromorpha
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