Alassa

Alassa

: 13.6-11.6
: ()
: Pakhna Formation
: Deep marine slope basin (bathyal)
: Fish (e.g. pipefish, cutlassfish), echinoids (heart urchins), cephalopods (Argonauta, Aturia), planktonic foraminifera, pteropods, nannofossils, occasional plant fragments
: Soft seafloor with burrowing echinoids, abundant plankton, occasional anoxic events, nearby vegetated landmass shedding organic debris

Alassa shown on the globe

Unknown

Leaf

Unknown fish - before cleaning

Unknown fish

Unknown fish - body detail

+1

Spine and (?)fins

Scale and (?)plant remains

Spine and (?)head

Spine and (?)head

Spine and (?)part of body

Unknown fish

In-situ, in a riverbed. Very eroded

+1

In-situ, inside the matrix

After digging up

The sample has been removed from the rock

+2

Scales (from a tail?)

+1

Unknown fish

Spine and (?)head

Scales (of a fish?), elongated shape. 7 fragments

3 large fragments

Large fragments. Side Α

+6

Scales (of a fish?), elongated shape. 7 fragments

3 large fragments

Large fragments. Side Α

Large fragment. Side B

Small fragments

Small fragment A, detail

Small fragment B, detail

Small fragment C, detail

Small fragment D, detail

Plant(?) - perhaps Posidonia oceanica?

3-4 shells. One likely of the genus Venus

Spine and (?)head

Conical impressions.

Conical impressions.

Conical impressions.

+4

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Scales

Fish

Scale

+1

Pre-preparation

Radiating lines are visible

Radiating lines are visible

Unclear detail with spine - perhaps a fish head

+1

Pre-preparation

Prepared. Bird(?)

Damaged (by preparation)

+1

Scale + negative impression

Scale

Negative impression

Various plant(?) impressions

Detail

Detail

+1

Fish tail

+1

View A

View A - detail. Fish(?)

View B

+1

+1