Species: serrata DINELEY & LOEFFLER, 1976
Etymology:

Holotype: NMC 19879

Locality: GSC 69014, 62?33’N, 127?45’W, south-west limb of the Grizzly Bear anticline, Northwest Territories Province, Canada.

Horizon: 260m above the top of the Whittaker Formation, in transitional facies between the Delorme and Road River Formations.

Biostratigraphy:

Age: Early Dittonian, Upper Lochkovian Stage, Lower Early Devonian Epoch, Early Devonian.

Material: Crushed, incomplete cephalothorax, prepared to show dorsal and ventral surfaces.

Paratypes:

NMC 19878: Fragment of rostrum prepared to show mouth.

NMC 19873: Posterior body and tail region.

NMC 19891: Tail fragment.

NMC 19882 : Cephalothorax with lateral lamina and isolated tail scales.

Referred material:

NMC 19870-19872, 19875-19877, 19880-19881, 19883-19897, 19900-19909, 19911-19913, 19915, 19917-19936, 21424, 21472-21483, 21508-21509: Fragments of carapace.

Unnumbered: Isolated denticles.

= cf. Lepidaspis serrata

Type 1

NMC 21521 : Fragment of cephalothorax.

NMC 21519 : Part of the underside of NMC 21521, revered on to « Plasticraft ».

NMC 21520: Indeterminate fragment.

Type 2

NMC 21522: ?Tail fragment.

Note: Brackish water lagoon.

 

Locality: GSC 81051, Exact co-ordinates unknown, Broken Skull River, Northwest Territories Province, Canada.

Horizon: Whittaker Formation, in transitional facies between the Delorme and Road River Formations.

Biostratigraphy:

Age: Early Dittonian, Upper Lochkovian Stage, Lower Early Devonian Epoch, Early Devonian.

NMC 19899, 19914, 19874: Fragments of a carapaces.

Note: Brackish water lagoon.