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Magos Biologis Adept Data Files

Fossil Record of Ancient Tyranidic Hive fleets

Excerpts from report and requests.

What follows is more difficult to believe than most of the things we have discovered about the tyranids. We have in our possession three distinct and complimentary sets of fossils from three separate planets. Each of these fossils appears to be an ancient tyranidic organism.

Calcified cellular structure and morphology studies indicate a high likelihood of direct ancestral links to modern tyranids. The age of these fossils varies based on location but >200,000,000 Terran years. 

New Gidieon
fl-class [Feral World]

Population: 0
Tithe Grade: Solutio Tertius 
Aggregate: 800
Aestimare: G700

Unclassified Tyranidic Fossiles
Tyranidic Mega Parasite fossils, aquatic

Tyranidic Mega Parasite fossils, aquatic

Acerese
fl-class [Feral World]

Population: 0
Tithe Grade: Solutio Tertius 
Aggregate: 800
Aestimare: G700

Found Amid scores of extinct Xexusaurus bones. Once the Apex Land predator on Acerese 2

Found within ancient earthquake site. 

Matmoss
fl-class [Feral World]

Population: 0
Tithe Grade: Solutio Tertius 
Aggregate: 800
Aestimare: G700

Oceanic basin sedentary fossil bed.

Site of the find on Matmoss

Adept Magos Biologis Brage discovered these unclassified fossils within the Adeptus Surveyors repository on Hallefuss.  <I was researching the origins of tyranids aMB Brage>He charted the locations of the finds  The progression of this ancient hive fleet was excruciatingly slow in comparison to what we see currently.  [NOTE: Please note the terminus of this path  It lies within the confines of the Maelstrom.  Could this ancient hive fleet be the source of the spatial disruption which caused the maelstrom, and perhaps the loss of the ancient aliens known as Slann. Addendum MB Salk] Dead and low evolutionary worlds are marked as well.

Note that the path doesn't intersect any current inhabited planets.  Indications are very high that the tyranids are an unbelievably ancient menace.  The methods they employ have escalated after the millennia since their last incursion into our galaxy.  The worlds upon which the fossils were found were not divested of all dermis or life, but suffered mass extinctions of larger creatures.  The elimination of mega fauna is thought to be a standard evolutionary mechanism but in these cases the extinctions coincide with the fossil record of tyranidic activity.   Nearly 100% of all aquatic creatures in excess of 1 metric ton suffered extinction on all three planets.  Land creatures faired better in a gradient based geographically.  The more distant from the oceans the more likely survival was.  While this is not immanently useful for practical application to the task of eliminating the threat posed by the tyranid hive fleets I feel it is important to study these ancient occurrences.  Many of the surviving fauna may have dormant genes which protect them from the microbes the tyranids carried.  Our preventive methods for tyranidic plague are unreliable at present due to comparison data being unattainable.  By your leave I ask for the acquisition of three surveyor crews and requisite Magos Biologis and Adeptus Mechanicus support to carry out this investigation under the direct control of Magos Biologis Salk.

Note the proximity to Luther Macintyre and Catachan.  Both worlds have creatures whose ancient ancestors may have encountered tyranidic predation.  REF Ambull, REF Catachan Devil

Magos Biologis Xarn Hallefuss Prime
Adept Magos Biologis Brage, liaison to Hallefuss