Robin Hood's Bay, Yorkshire

Κόλπος τοῦ Δρυμείου Ροβίνου, Γιόρκσαϊρ

Γεωλογικὸς χρόνος

Τριασικόν Ἰουρασικόν

Ἡλικία: 195–180 ἑκατομμύρια ἔτη
Περίοδος: Πρώιμον Ἰουρασικόν (Πλιενσβάχιον-Τοαρκιανόν)
Σχηματισμός: Λεκάνη Κλίβελαντος (Σχηματισμὸς πηλολίθου Γουίτμπι καὶ ψαμμίτου Στέιθς)
Ἐναποθέσεως περιβάλλον: Θάλασσα ῥηχὴ ἐπιηπειρωτική, ἐναλλαγὴ πηλοῦ βαθέος καὶ ψάμμου παρακτίου
Ἀπολιθωμάτων εἴδη: Ἀμμωνῖται, βελεμνῖται, δίθυρα, ἑρπετὰ θαλάσσια, καρκινοειδῆ, ἴχνη, ξύλα καὶ φυτικὰ λείψανα
Παλαιοοικολογία: Θάλασσα ῥηχὴ κινούμενη, στάθμη μεταβαλλομένη· πυθμὴν πηλώδης ἡσύχιος, ψάμμος ἐκ καταιγίδων, τόποι βαθεῖς ἀνοξυγόνοι, ὕλη χερσαία ἐκ τῆς γῆς

Νόησον θάλασσαν πλατεῖαν καὶ ῥηχὴν ἐκτεινομένην, ὕδωρ γλαυκὸν ἠρέμα κινούμενον· πυθμὴν πηλὸς μέλας καὶ ψάμμος κυματώδης, ὑπὸ ῥευμάτων καὶ καταιγίδων σχηματιζόμενος.

Ἐγγὺς δε τῆς ἀκτῆς τὸ ὕδωρ ῥηχότερον καὶ σφοδρότερον· ἐνταῦθα ψαμμώδεις λόφοι καὶ στερεὰ χωρία, ξύλα καὶ φυτικὰ λείψανα ἐκ ποταμῶν φερόμενα.

Ὁ τόπος μεταβάλλεται ἀεί, στάθμη θαλάσσης ἀνιούσης καὶ κατιούσης, ἐν καταιγίδαις τε καὶ ἡσυχίαις.

Robin Hood's Bay, Yorkshire shown on the globe

†Ἀμμωνῖται

1 δεῖγμα

Ammonite - Measurement ~5 cm.

6

†Βελεμνῖται

5 δείγματα

Belemnite - Belemnite length ~1.5 cm.

4

Belemnite in three pieces. Total length ~8 cm.

4

Belemnite - Length ~3 cm.

2

Apex of a belemnite - Measurement ~2 cm.

4

Apex of a belemnite - Length ~4 cm.

6

Apex of a belemnite - Length ~4 cm.

Apex of a belemnite - Vertical view

Apex of a belemnite - Cross-section with radial fibrous structure. The apical cavity is also visible

Apex of a belemnite - Cross-section with radial fibrous structure. The apical cavity is also visible

Apex of a belemnite

Apex of a belemnite - Cross-section with radial fibrous structure. The apical cavity is also visible

Δίθυρα

7 δείγματα

A small bivalve (~1 cm) and an unknown (~0.5 cm).

2

Rock with small bivalve shells.

6

Rock with small bivalve shells.

Close-up of two bivalves. Measurement ~1 cm.

Close-up of two bivalves.

Two slabs (positive and counterpart) with small bivalve shells.

Two slabs (positive and counterpart) with two bivalve shells.

Detail with small shells.

Small bivalve shell - Measurement ~1.5 cm.

6

Small bivalve shell - Measurement ~1.5 cm.

Small bivalve shell - Measurement ~1 cm.

Small bivalve shell - Detail

Small bivalve shell - Detail

Small bivalve shell - Detail

Small bivalve shell - Detail

Rock with bivalve shells - Measurement ~2 cm & ~0.4 cm

4

Bivalve - Measurement ~1.5cm

4

Bivalve - Measurement ~1 cm

4

Bivalve - Measurement ~1.5 cm

4

Δεινοσαύρια

1 δεῖγμα

Possible dinosaur footprint cast. ~9 cm.

7

Possible dinosaur footprint cast. ~9 cm.

Possible dinosaur footprint cast.

Possible dinosaur footprint cast.

Possible dinosaur footprint cast.

Possible dinosaur footprint cast.

Possible dinosaur footprint cast.

Possible dinosaur footprint cast.

Γαστρόποδα

1 δεῖγμα

Tiny gastropod - Measurement ~0.4 cm

5

Μυτιλίδαι

1 δεῖγμα

Two slabs (positive and counterpart) with mussels. Measurement ~6 cm.

6

Two slabs (positive and counterpart) with mussels. Measurement ~6 cm.

Close-up of both slabs showing the concentric growth lines.

Detail showing the concentric growth lines.

The same fossil before being split in two.

Detail of the mussel.

Detail of the mussel.

Πιννίδαι

3 δείγματα

Slab with multiple pen shells; overall view. Largest specimen ~20 cm.

7

Slab with multiple pen shells; overall view. Largest specimen ~20 cm.

Detail of the two largest shells showing the longitudinal ribbing.

Detail of a pen shell.

Pen shell with distinct longitudinal ribbing.

Detail of a pen shell.

Detail of a pen shell. Measurement ~4.5 cm.

Pen shell. Measurement 9–10 cm.

Fragment of a pen shell (lower part). Length 11–12 cm.

5

Pen shell fragment. Measurement ~10 cm.

3

Φυτά

2 δείγματα

Fossilized wood. Length ~15 cm.

6

Fossilized wood. Length ~15 cm.

Fossilized wood - Detail

Fossilized wood - Detail

Fossilized wood - Detail

Fossilized wood - Detail

Fossilized wood - Side view

Fossilized wood. Length ~3 cm.

4

Ἀταξινόμητα

4 δείγματα

A small bivalve (~1 cm) and an unknown (~0.5 cm).

2

Unknown. Measurement ~4 cm.

4

Unknown. Measurement ~14 cm.

6

Unknown. Measurement ~14 cm.

Unknown, top view.

Unknown, detail of the central structure.

Unknown, detail.

Unknown, another view.

Unknown, detail.

Unknown - Measurement ~2 cm.

3