Trinodus

Trinodus
Temporal range: Ordovician
A drawing of "Trinodus tardus"
A drawing of Trinodus tardus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: †Trilobita (?)
Order: †Agnostida
Family: †Metagnostidae
Genus: †Trinodus
M'Coy, 1846
Type species
†Trinodus agnostiformes
M'Coy, 1846
Species
  • †Trinodus agnostiformes M'Coy, 1846 synonyms A. agnostiformis, A. trinodus
  • †Trinodus tardus (Barrande,1846) synonyms Battus tardus, Agnostus glabratus, A. tardus[1] Arthrorhachis tarda, alternative spelling A. tardus
  • †Trinodus elspethi (Raymond, 1925) synonym Arthrorhachis elspethi
  • †Trinodus danicus Poulsen, 1965 synonym Arthrorhachis danica
  • †Trinodus girvanensis (Reed, 1903) synonyms Agnostus girvanensis, Arthrorhachis girvanensis, Girvanagnostus girvanensis
  • †Trinodus hupehensis Lu, 1975 synonym Arthrorhachis hupehensis
  • †Trinodus knockerkensis Romano & Owen, 1993 synonym Arthrorhachis knockerkensis
  • †Trinodus latilimbata (Ju in Qiu et al., 1983)synonym Arthrorhachis latilimbata
  • †Trinodus pragensis (Přibyl & Vaněk, 1968) synonym Arthrorhachis pragensis
Synonyms
  • †Arthrorhachis
  • †Girvanagnostus
  • †Metagnostus

Trinodus is a very small to small (about 1 centimetre or 0.39 inches) blind trilobite, a well known group of extinct marine arthropods, which lived during the Ordovician (Tremadocian to early Hirnantian),[1] in what are now the Yukon Territories, Virginia, Italy, Czech Republic, Poland, Denmark, Sweden, Svalbard, Ireland, Scotland, Wales, Iran, Kazakhstan and China. It is one of the last of the Agnostida order to survive.

  1. ^ a b Budil, P.; Fatka, O.; Kolář, P.; David, M. (2011). "Arthrorhachis Hawle & Corda, 1847 (Agnostida) in the Prague Basin revisited" (PDF). Bulletin of Geosciences. 86 (4): 707–724. doi:10.3140/bull.geosci.1262.