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Agnath vs Agnathous - What's the difference?

agnath | agnathous | Related terms |

Agnath is a related term of agnathous.


As a noun agnath

is (zoology) an agnathan.

As an adjective agnathous is

jawless.

agnath

English

Noun

(en noun)
  • (zoology) An agnathan.
  • * 1979 , Stephen C. Wood, Evolution of Respiratory Processes , Marcel Dekker, ISBN 0-8247-6793-4, page 218:
    • Evolution of vertebrates was accompanied by a gradual increase in oxygen availability, from the irrespirable atmosphere of the Precambrian to a PO? at 7 mmHg with the first vertebrates (agnaths ), to the present sea level PO? value of 160 mmHg with the first reptiles.
  • * 1996 , George Christopher Williams, Adaptation and Natural Selection , Princeton University Press, ISBN 0-691-02615-7, page 51:
    • The gnathostomes almost entirely replaced the agnaths , presumably because they were more effective fishes.
  • * 2002 , Harold J. Morowitz, The Emergence of Everything , Oxford University Press, ISBN 0-19-513513-X, page 113:
    • Thus, although tunicates are presumably intermediate between flatworms and agnaths', the larval tunicate more closely resembles the flatworm and adult ' agnath .
    English terms with alpha privatives ----

    agnathous

    English

    Adjective

    (-)
  • Jawless.
  • * 1876 , , “On the Lingual Dentition, Jaw, and Genitalia of Carelia, Onchidella, and Other Pulmonata”, Proceedings of the Academy of Natural Sciences of Philadelphia , page 185:
    • The Onchidiidæ are described as agnathous , but I am confident of having observed the jaw figured.
  • * 1900 , , “Notes on Drepanaspis Gmündenensis'', Schlüter”, ''Geological Magazine , page 158:
    • The mouth is a transverse slit, which shows no teeth, nor any jaws properly so called, and therefore affords an apparent support to the agnathous theory of the Ostracodermi.
  • * 1997 , Gene S. Helfman, The Diversity of Fishes , Blackwell Science, ISBN 0-86542-256-7, page 152:
    • This and related agnathous (jawless), finless forms inhabited shallow seas or estuarine habitats[…].
  • * 2007 , James Brown, “Sequencing the Braden Style within Mississippian Period Art and Iconography”, Ancient Objects and Sacred Realms , University of Texas Press, ISBN 0-292-71347-9, page 235:
    • Parenthetically, this line treatment suggests an attempt to mimic the agnathous (jawless) head, if we suppose that the jaw area was colored suitably dark in contrast to the face proper.
  • (pathology) Afflicted by or characteristic of agnathia.
  • * 1886 , “Exhibition of Specimens: Meeting V”, Transactions of the Edinburgh Obstetrical Society , volume 11, page 79:
    • Dr Underhill exhibited an agnathous and hydrocephalic fœtus. This was an instance of the rare abnormality due to defect of the lower jaw.
  • * 1893 , “Proceedings of the Anatomical Society of Great Britain and Ireland: November 1892”, Journal of Anatomy and Physiology , volume 27, page xvii:
    • Upon this view an agnathous fœtus may be regarded as sometimes due to a posterior dichotomy, which has ultimately become a complete separation, and in which the two fœtuses have developed equally during a considerable part of intra-uterine life.
  • * 1964 , M. W. Fox, “Anatomy of the Canine Skull in Low-grade Otocephaly”, Canadian Journal of Comparative Medicine and Veterinary Science , volume 28, pages 105–106:
    • In all the neonates examined from the partially agnathous strain, there was no obvious agenesia of the lower mandible.

    Synonyms

    * (jawless) agnathic, jawless * (afflicted by agnathia) agnathic

    Related terms

    * agnath * agnatha * agnathan

    References

    * agnathous] in , volume I, 1888 English terms with alpha privatives English words suffixed with -ous