Henningsmoenicaris
Extinct genus of arthropods
From Wikipedia, the free encyclopedia
Henningsmoenicaris is an extinct genus of Cambrian arthropods from the Orsten of Sweden.[2] It was formerly named Henningsmoenia, however this name was preoccupied by an ostracod, therefore it was renamed.[1] Its genus name translates to "Henningsmoen's shrimp" after G. Henningsmoen. The genus contains a single species, Henningsmoenicaris scutula, with the specific name, scutula referencing the large, bowl-shaped carapace.[2]
Müller and Waloszek, 1990[1]
| Henningsmoenicaris Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Superphylum: | Ecdysozoa |
| Clade: | Panarthropoda |
| Phylum: | Arthropoda |
| Genus: | †Henningsmoenicaris Müller and Waloszek, 1990[1] |
| Species: | †H. scutula |
| Binomial name | |
| †Henningsmoenicaris scutula (Müller & Waloszek, 1990) | |
Morphology
Henningsmoenicaris unusually had an almost 360° field of vision, with two extremely long stalked eyes facing in almost all directions at once, even inwards to give depth perception to the opposite eye.[3] Aside from this, it is a relatively "ordinary" Orsten arthropod with a large bowl-shaped head shield, five pairs of differentiated head appendages including antennules used for swimming, a three-segmented thorax with a pair of appendages on each segment (alongside a ninth pair seemingly still developing in the most developed complete specimen), a five-spined tail segment and a hypostome on the head. The most developed complete fossil is roughly 550 micrometers long, however a trunk fragment of a much larger and more developed specimen suggests even this form is a larva.[2][4]
