Taallalt, issoumour mountain

Τααλλάλτ, Ὄρος Ἰσσουμοῦρ

Taallalt, Issoumour Mountain

Taallalt, Issoumour Mountain shown on the globe

Ἡλικία: ~420 ἑκατομμύρια ἔτη
Περίοδος: Ὄψιμον Σιλούριον (Πριδολία)
Σχηματισμός: Unknown
Ἐναποθέσεως περιβάλλον: Open marine shelf to deeper offshore setting below storm wave base
Ἀπολιθωμάτων εἴδη: Crinoids, orthoconic cephalopods, other marine invertebrates
Παλαιοοικολογία: Calm offshore waters, fine sediment accumulation, floating crinoid colonies with gas-filled loboliths, episodic transport and burial, low-energy seafloor conditions

Νόει θάλατταν ἀπέραντον, πόρρω ἐκτεινόμενην πάσης ἀκτῆς. Το προς την ἐπιφάνειαν ὕδωρ καθαρόν και φαιδρόν, πρός δε το βένθος ἐς κυανοῦν σκότος γενόμενον. Ἰλύς λεπτή και ἀσβεστολιθική ὡς βραδέως τῷ πυθμένι κατακάθεται, λευκοῖς ἰζημάτων στρώμασι αὐτόν καλύπτουσα.

Το περιβάλλον σταθερόν τε και χαμηλῆς ἐνεργείας, ἐνίοτε δε διαταρασσόμενον. Μετὰ χρόνου, ὁ πυθμήν ἐς παχείας ἀσβεστολιθικάς και σχιστολιθικάς διαδοχάς καταρτίζεται, τα ἐκεῖ ταφόμενα ὄντα διατηρῶν και στιγμιοτυπῶν οἰκοσύστημά τι ἰδιαίτερον Σιλουριανόν, ἐν ταῖς ἐσχάταις προ τοῦ Δεβονίου ἐποχαῖς.

Artistic depiction of Camerata

†Θαλαμώδη

🦴 2

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

Κρινοειδῆ

🦴 9

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

Ὀρθοκερατοειδῆ

🦴 13

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

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

Orthoceratoid - 3-4cm. Cross-section. The siphuncle and the convex wall of the chamber can be seen

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

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

Orthoceratoid - ~3cm. Cross-section. The siphuncle can be faintly seen.

+1

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.

Orthoceratoid - ~3cm. Its tip doesn't seem to have been broken.

+1

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

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

Orthoceratoid - ~3cm. Cross-section. The siphuncle can be seen.

+1

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

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

Orthoceratoid - 1-2cm.

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

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

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

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

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

Orthoceratoid - ~1cm. Cross-section. The siphuncle can be seen,

Orthoceratoid - 2-3cm.

Orthoceratoid - 2-3cm. Cross-section

Orthoceratoid - 2-3cm.

Orthoceratoid - ~1cm.

Orthoceratoid - ~1cm. Cross-section

Orthoceratoid - ~1cm.

Orthoceratoid - ~1cm. Hard to see

+1

Artistic depiction of Scyphocrinites elegans

†Σκυφοκρινίτης ὁ κομψός

🦴 2

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

Ἀταξινόμητα

🦴 1

Unknown - 2-3cm

Unknown - Branching structure

Unknown - Branching structure

+1