Taallalt, issoumour mountain

Taallalt, Issoumour Mountain

: ~420
: ()
: Unknown
: Open marine shelf to deeper offshore setting below storm wave base
: Crinoids, orthoconic cephalopods, other marine invertebrates
: Calm offshore waters, fine sediment accumulation, floating crinoid colonies with gas-filled loboliths, episodic transport and burial, low-energy seafloor conditions

Taallalt, Issoumour Mountain shown on the globe

Artistic depiction of Camerata

Calyx fragment - ~5cm

Calyx fragment - tightly fused plates, characteristic of the camerate crinoids

Calyx fragment - back side

+1

Calyx fragment with stem - 4-5cm

Calyx fragment with stem

Calyx fragment with stem - Cross-section and branching of the stem can be seen

+4

Calyx fragment with stem - 4-5cm

Calyx fragment with stem

Calyx fragment with stem - Cross-section and branching of the stem can be seen

Calyx fragment with stem - Cross-section and branching of the stem can be seen

Calyx fragment with stem

Calyx fragment with stem - Cross-section and branching of the stem can be seen

Calyx fragment with stem - Back side

Artistic depiction of Crinoidea

Stem fragments - ~2cm

Stem fragments

Stem fragments

+2

Stem and lobolith fragments

Stem and lobolith fragments

Stem and lobolith fragments

+2

Stem fragments - ~2cm

Stem fragments

Stem fragments - Cross-section

+4

Stem fragments - ~2cm

Stem fragments

Stem fragments - Cross-section

Stem fragments - Cross-section

Stem fragments

Stem fragments

Stem fragments

Arm segments with pinnules - 2-3cm

Arm segments with pinnules - 4 arms stacked on top of each other

Arm segments with pinnules - 4 arms stacked on top of each other

+4

Arm segments with pinnules - 2-3cm

Arm segments with pinnules - 4 arms stacked on top of each other

Arm segments with pinnules - 4 arms stacked on top of each other

Arm segments with pinnules

Arm segments with pinnules

Stem fragments

Stem fragments

Arm segments with pinnules - ~5cm

Arm segments with pinnules

Arm segments with pinnules

+4

Arm segments with pinnules - ~5cm

Arm segments with pinnules

Arm segments with pinnules

Arm segments with pinnules

Arm segments with pinnules

Arm segments with pinnules

Arm segments with pinnules - Back side

Arm segments with pinnules - 4-5cm

Stem segments

Arm segments with pinnules

+6

Arm segments with pinnules - 4-5cm

Stem segments

Arm segments with pinnules

Arm segments with pinnules

Arm segments with pinnules

Arm segments with pinnules

Unknown detail

Stem segments

Stem segments, cross-section visible

Stem fragments - ~4cm

Stem fragments

Stem fragments - Cross-section

+3

Stem fragments - ~4cm

Stem fragments

Stem fragments - Cross-section

Stem fragments - Cross-section

Stem fragments

Stem fragments

Various stem fragments - 1-3cm length, 0.6-1.2cm diameter

Various stem fragments

Various stem fragments

+5

Various stem fragments - 1-3cm length, 0.6-1.2cm diameter

Various stem fragments

Various stem fragments

Various stem fragments

Various stem fragments

Stem fragment of crinoid - Star-shaped axial canal visible in the middle of the cross-section

Stem fragment of crinoid - Star-shaped axial canal visible in the middle of the cross-section. The asymmetry suggests that the fossil has undergone compression.

Stem fragment of crinoid - It appears to have been almost flattened by compression.

Branching arm base - 2-3cm

Branching arm base - Three branches visible

Branching arm base - Three branches visible

+3

Branching arm base - 2-3cm

Branching arm base - Three branches visible

Branching arm base - Three branches visible

Branching arm base - Cross-section of the base

Branching arm base - Cross-section of the branches

Branching arm base - Three branches visible

Artistic depiction of Orthoceratoidea

Fragment of an orthoceratoid - 9-10cm

Orthoceratoid - ~3cm

Orthoceratoid - ~2cm. Cut along its length, internal structure with chambers visible

+3

Fragment of an orthoceratoid - 9-10cm

Orthoceratoid - ~3cm

Orthoceratoid - ~2cm. Cut along its length, internal structure with chambers visible

Fragment of an orthoceratoid - ~2cm

Fragment of an orthoceratoid - 9-10cm

Cross-section of an orthoceratoid - The siphuncle is visible, slightly off-center

Orthoceratoid - ~4cm

Orthoceratoid - ~3cm. Slightly visible chambers due to weathering

Orthoceratoid - ~1cm. Some chambers visible due to breakage

+8

Orthoceratoid - ~4cm

Orthoceratoid - ~3cm. Slightly visible chambers due to weathering

Orthoceratoid - ~1cm. Some chambers visible due to breakage

Orthoceratoids of different sizes

Orthoceratoids of different sizes

Orthoceratoid

Small orthoceratoid - 5 chambers visible due to breakage

Orthoceratoids of different sizes

Orthoceratoid - Some chambers visible due to breakage

Orthoceratoids - Back side

Orthoceratoids - Back side, detail. Possible a protoconch

Orthoceratoid - ~10cm

Orthoceratoid

Orthoceratoid - 2-3cm

+5

Orthoceratoid - ~10cm

Orthoceratoid

Orthoceratoid - 2-3cm

Orthoceratoid

Orthoceratoid - The tip is broken

Orthoceratoid - Cross-section. The siphuncle is faintly visible

Orthoceratoid - Back side

Orthoceratoid - Two walls of the internal chambers are faintly visible

Orthoceratoid fragments of various sizes

Orthoceratoid - 3-4cm. The chamber walls are faintly visible.

Orthoceratoid - 3-4cm. The chamber walls are faintly visible.

+1

Orthoceratoid fragments of various sizes

Orthoceratoid - ~3cm. The chamber walls can be faintly seen.

Orthoceratoid - ~3cm. The chamber walls can be faintly seen.

+2

Orthoceratoid fragments of various sizes

Orthoceratoid - ~3cm. The chamber walls can be seen, with slightly wavy sutures.

Orthoceratoid - ~3cm. The fracture reveals the wavy sutures between the chambers very clearly.

+2

Orthoceratoid fragments of various sizes

Orthoceratoid - ~3cm. The chamber walls can be seen, with slightly wavy sutures.

Orthoceratoid - ~3cm. The chamber walls can be seen.

+2

Orthoceratoid fragments of various sizes

Orthoceratoid - 1-2cm. The chamber walls can be seen.

Orthoceratoid - 1-2cm. The siphuncle can be seen.

+1

Orthoceratoid fragments of various sizes

Orthoceratoid - 2-3cm. The chamber walls can be seen.

Orthoceratoid - 2-3cm. The siphuncle and the chamber walls can be seen.

+1

Orthoceratoid fragments of various sizes

Orthoceratoid - ~1cm. The chamber walls can be seen.

Orthoceratoid - ~1cm. Cross-section. The siphuncle and the convex surface of the chamber can be seen.

+1

Orthoceratoid fragments of various sizes

Orthoceratoid - 2-3cm.

Orthoceratoid - 2-3cm. Cross-section

+1

Orthoceratoid fragments of various sizes

Orthoceratoid - ~1cm.

Orthoceratoid - ~1cm. Cross-section

+1

Orthoceratoid fragments of various sizes

Orthoceratoid - ~1cm. Hard to see

Orthoceratoid - ~1cm. Hard to see

Artistic depiction of Scyphocrinites elegans

Lobolith - ~8cm

Lobolith - Broken

Lobolith - Broken. The shape of the inner hollow chamber can be seen.

+3

Lobolith - ~8cm

Lobolith - Broken

Lobolith - Broken. The shape of the inner hollow chamber can be seen.

Lobolith - Crystals formed on the inside.

Lobolith - Crystals formed on the inside.

Lobolith - Crystals formed on the inside.

Stem and lobolith fragments

Stem and lobolith fragments

Stem and lobolith fragments

+2

Artistic depiction of Unclassified

Unknown - 2-3cm

Unknown - Branching structure

Unknown - Branching structure

+1