Temporal range:
Halkieria evangelista from the Lower Cambrian Sirius Passet, North Greenland
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
(unranked): Spiralia
Superphylum: Lophotrochozoa
Phylum: Mollusca
Family: Halkieriidae
Poulsen, 1967
Genus: Halkieria
Poulsen, 1967
Type species
Halkieria obliqua
Poulsen, 1967[1]

See text

The halkieriids are a group of fossil organisms from the Lower to Middle Cambrian. Their eponymous genus is Halkieria /hælˈkɪəriə/, which has been found on almost every continent in Lower to Mid Cambrian deposits, forming a large component of the small shelly fossil assemblages. The best known species is Halkieria evangelista, from the North Greenland Sirius Passet Lagerstätte, in which complete specimens were collected on an expedition in 1989. The fossils were described by Simon Conway Morris and John Peel in a short paper in 1990 in the journal Nature. Later a more thorough description was undertaken in 1995 in the journal Philosophical Transactions of the Royal Society of London and wider evolutionary implications were posed.

The group is sometimes equated to Sachitida, although as originally envisaged, this group includes the wiwaxiids[2] and is thus equivalent to the Halwaxiida.

  1. ^ Chr. Poulsen: Fossils from the Lower Cambrian of Bornholm. In: Det Kongelige Danske Videnskabernes Selskab – Matematisk-fysiske Meddelelser, Vol. 36, No. 2, 48 S. + 9 Tafeln, 1967.
  2. ^ Bengtson, S. (1985). "Redescription of the Lower Cambrian Halkieria obliqua Poulsen". Geologiska Föreningen i Stockholm Förhandlingar. 107 (2): 101–106. doi:10.1080/11035898509452621.

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