Puneet Varma (Editor)

Globampyx

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Kingdom
  
Animalia

Class
  
Trilobita

Family
  
Raphiophoridae

Phylum
  
Arthropoda

Order
  
Asaphida

Rank
  
Genus

Globampyx

Similar
  
Raphiophoridae, Pytine, Cnemidopyge, Lonchodomas, Ampyx

Globampyx is an extinct genus raphiophorid trilobites. It lived during the later part of the Arenig stage of the Ordovician Period, approximately 478 to 471 million years ago. Species of the genus are known from Canada (southeastern British Columbia), Norway (Svalbard) and Sweden.

Contents

Distribution

  • G. sinalae is known from the Middle Ordovician of Canada (Orthidiella brachiopod zone, Glenogle Shales Formation, North White River Section, British Columbia, 471.8-468.1 Ma)
  • G. trinucleoides is known from the Middle Ordovician of Svalbard (Psephosthenaspis microspinosa small shelly zone, Olenidsletta Member, Valhallfonna Formation, Ny friesland, 471.8-457.5 Ma)

    • Description

    The headshield (or cephalon) of Globampyx is densely covered with very small granules. The central raised area of the cephalon (or glabella) has an inverted flask-shape. It lacks the rapier-like glabellar spine of many other raphiophorids, but only has a tubercle. The thorax has five segments. The short but wide triangular pygidium, with a rather low axis (or rhachis) of up to six indistinct rings that reaches the faint border furrow.

    References

    Globampyx Wikipedia
    (Text) CC BY-SA