Alassa

Alassa

Alassa shown on the globe

: 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

Artistic depiction of Actinopterygii

🦴 4

Unknown fish - before cleaning

Unknown fish

Unknown fish - body detail

+1

Unknown fish

Unknown fish

Fish

Artistic depiction of Aves

🦴 1

Pre-preparation

Prepared. Bird(?)

Damaged (by preparation)

+1

Artistic depiction of Bivalvia

🦴 1

Pre-preparation

Radiating lines are visible

Radiating lines are visible

Artistic depiction of Chordata

🦴 15

Spine and (?)fins

Scale and (?)plant remains

Spine and (?)head

Spine and (?)head

Spine and (?)part of body

Scales (from a tail?)

+1

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

Spine and (?)head

Scales

Scale

+1

Unclear detail with spine - perhaps a fish head

+1

Scale + negative impression

Scale

Negative impression

Fish tail

View A

View A - detail. Fish(?)

View B

+1

Artistic depiction of Heterobrissus montesi

🦴 2

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

Artistic depiction of Ostreida

🦴 1

+1

Artistic depiction of Plantae

🦴 5

Leaf

Scale and (?)plant remains

Plant(?) - perhaps Posidonia oceanica?

Various plant(?) impressions

Detail

Detail

+1

View A

View A - detail. Fish(?)

View B

+1

Artistic depiction of Unclassified

🦴 5

Unknown

Conical impressions.

Conical impressions.

Conical impressions.

+4

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Conical impressions.

Unclear detail with spine - perhaps a fish head

+1

+1

Artistic depiction of Venus

🦴 1

3-4 shells. One likely of the genus Venus