Nephrops kvistgaardae

Overview

Nephrops kvistgaardae is a lobster-like crustacean from Late Miocene Gram, Denmark. A fossil of a long, slender left claw is known. One small body part became a clue for distinguishing a new species.^[1]

Key facts

The scientific name includes the name of the person who donated the specimen. A single claw flattened in clay became the starting point for study and naming. Records of discovery and donation continued into the organism’s name.^[1]

Time and place

It is known from Late Miocene strata in the present-day Gram area of Denmark. The broad Late Miocene background was roughly 11.6–5.3 million years ago. The claw fossil can be examined within regional research on decapods.^[1][3]

The time range describes source context, not the complete duration of this species.

Size, form and skeleton

The directly known specimen MSM 1574 is a left first claw. Its long, slender form was studied as a feature for comparing species. It can be considered alongside the lobster-like body construction of the genus Nephrops.^[1][2]

The size of Nephrops kvistgaardae can be glimpsed from its fossil claw. In the left claw of type specimen MSM 1574, the segment forming the palm and fixed finger is about 5.3cm long. Even this one terminal segment, rather than the entire claw, shows that the claw was fairly elongated.^[4]

Habitat and reproduction

How can a species be distinguished from one claw? The researcher examined its long, slender outline in comparing a new species. This crustacean research first focuses on the form of a particular region rather than the whole body.^[1]

Fossil discovery

Research on Late Miocene decapods from Gram newly described this species. The material, origin of the name, and claw description appear together. The form of a flattened fossil and the donor’s record become one story.^[1]

References

1. Fraaije et al. (2005) — Late Miocene decapods from Gram, Denmark
2. Study of Nephrops classification and lobster relationships
3. International Commission on Stratigraphy (2024) — Geological time chart
4. Fraaije et al. (2005) — Miocene crustaceans from Gram, Denmark
5. Albrecht (1983) — Die Protastacidae n. fam., fossile Vorfahren der Flusskrebse?
6. Huxley1896 — Comparing crayfish and fossil crustaceans

Research questions

How does the long, slender claw differ from other claws in the same genus? The species description can be read together with taxonomic research on Nephrops. A question beginning with a small region broadens into comparisons among lobsters.^[1][2]

Observation

Follow the long axis of the claw toward its tip. Examining the slender outline helps focus attention on the form distinguished by the researcher in a small fossil.^[1]