Borhyaena tuberata

Overview

Borhyaena tuberata is a mammal from early Miocene Patagonia. Several postcranial bones and separate head and neck material have been studied. It illustrates how body organization is reconstructed from scattered bones.^[1][2]

Key facts

One separate specimen includes a skull and five well-preserved neck vertebrae. This material was first described as Borhyaena excavata and later reassigned to B. tuberata. Its story shows fossil names and interpretations changing through research.^[1]

Time and place

It is known through studies of early Miocene Patagonian material. The Miocene as a whole spans roughly 23–5.3 million years ago. Partial postcranial bones and head and neck material provide clues to this mammal.^[1][3]

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

Size, form and skeleton

Postcranial comparisons are based on PU015701, with humeri, heel bones, and vertebrae from other specimens also consulted. A separate small individual is described with a skull and five neck vertebrae. Different body regions can be compared across several sources of material.^[1]

Specimen PU 015701 of Borhyaena tuberata was estimated at an average of approximately 23 kg using three calculations applied to limb bones. This result concerns a particular specimen and does not mean that every individual of the species weighed the same.^[4]

Habitat and reproduction

What can postcranial bones reveal about climbing and running? A 2004 research abstract discussed a trend toward running-related form using Borhyaena as an example. It explored possible functions through bone comparisons.^[2]

Fossil discovery

Head and neck material described as another species in 1906 was reassigned to B. tuberata in 1978. A 2003 postcranial comparative study treated several specimens separately. Old fossils were reused for new questions of classification and function.^[1]

References

1. Argot (2003) — Comparing postcranial bones of Borhyaena and Prothylacynus
2. Study of the evolution and anatomy of South American predatory mammals
3. International Commission on Stratigraphy (2024) — Geological time chart
4. Argot (2003) — Body size of two Miocene carnivorous marsupials
5. Study of Late Miocene vertebrates from Soblay (2008) — Ictitherium
6. Akkaşdağı carnivore study (2005) — Taxonomic treatment of Ictitherium

Research questions

How do several partial skeletons reveal the body of one species? The bones of each specimen must be considered alongside their assignment histories. Research on Borhyaena reads body connections and fossil names together.^[1]

Observation

Move your gaze from the head and neck to trunk and limb material. Examine bones from different regions, such as the humerus and heel bone, separately to compare the information contributed by several specimens.^[1]