Chordata

Συνομοταξία Χορδωτά (Chordata)

Μέσον Μειόκαινον · 13.6–11.6 ἑκατομμύρια ἔτη Σχηματισμός Πάχνας 🇨🇾

Λευκοθέα

🦴 1

Scale

Μέσον Μειόκαινον · 13.6–11.6 ἑκατομμύρια ἔτη Σχηματισμός Πάχνας 🇨🇾

Ἄλασσα

🦴 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

Πρώιμον Ἠώκαινον · ~54.5 ἑκατομμύρια ἔτη Σχηματισμός Ἁργουίχη (Βλακχήθειες ἀποθέσεις) 🏴󠁧󠁢󠁥󠁮󠁧󠁿

Ἀββαεῖον Λεσνές, Ἀββαείου Δρυμός, Λονδῖνον

🦴 24

Vertebra - measurement ~0.8cm

Vertebra - side view

Vertebra - side view

+2

Vertebra - measurement ~0.8cm

Vertebra

Vertebra

+3

Vertebra - measurement ~0.9cm

Vertebra

Vertebra - cross-section

+3

Vertebra - measurement ~0.4cm length

Vertebra

Vertebra

+1

Vertebra - measurement ~0.9cm

Vertebra - side view

Vertebra - side view

+2

Vertebra - measurement ~0.4cm

Vertebra

Vertebra - side view

+3

Vertebra - measurement ~0.9cm

Vertebra

Vertebra

+3

Vertebra - measurement ~1cm

Vertebra

Vertebra

+1

Vertebra - measurement ~0.6cm (diameter)

Vertebra - measurement ~0.7cm (length)

Vertebra

+4

Vertebra - measurement ~0.6cm (diameter)

Vertebra - measurement ~0.7cm (length)

Vertebra

Vertebra

Vertebra

Vertebra

Vertebra

Vertebra - measurement ~0.7cm

Vertebra

Vertebra

+2

Vertebra - measurement ~0.4cm

Vertebra

Vertebra

+2

Vertebra - measurement ~0.1cm

Vertebra

Vertebra - side view

+2

Vertebra(?) - measurement ~0.6cm

Vertebra(?)

Vertebra(?)

+2

Vertebra, broken in the middle - measurement ~0.6cm

Vertebra, broken in the middle

Vertebra, broken in the middle

+2

Vertebra - measurement ~0.6cm

Vertebra

Vertebra

+3

Vertebra, very weathered - measurement ~0.5cm

Vertebra, very weathered

Vertebra, very weathered

Vertebra - measurement ~0.4cm

Vertebra

Vertebra

+1

Vertebra, very weathered - measurement ~0.7cm

Vertebra, very weathered

Vertebra, very weathered - side view

+2

Vertebra, very weathered - measurement ~0.6cm

Vertebra, very weathered

Vertebra, very weathered

+2

Vertebra, very weathered - measurement ~0.3cm

Vertebra, very weathered

Vertebra, very weathered

+1

Bone, broken - measurement 2.5-3cm

Bone, broken

Bone, broken

+3

Bone fragment - measurement ~1cm

Bone fragment

Bone fragment

+4

Bone fragment - measurement ~1cm

Bone fragment

Bone fragment

Bone fragment

Bone fragment - internal structure visible

Bone fragment - internal structure visible

Bone fragment - internal structure visible

Bone fragment - measurement ~1cm

Bone fragment - internal structure visible

Bone fragment

+3

Bone fragment - measurement ~0.9cm

Bone fragment

Bone fragment

Ὄψιμον Κρητιδικόν · 100–94 ἑκατομμύρια ἔτη Ὁμάς Κεμ Κεμ (Σχηματισμοί Γαρά Σμπᾶα και Δουίρα) 🇲🇦

Κεμ Κεμ

🦴 7

Bone fragment - Measurement ~3cm

Bone fragment

Bone fragment

+2

Bone - Measurement ~3cm

Bone

Bone

+8

Bone - Measurement ~3cm

Bone

Bone

Bone

Bone

Bone

Bone

Bone

Bone

Bone

Bone

Unknown, perhaps bone fragment - Measurement ~2cm

Unknown, perhaps bone fragment

Unknown, perhaps bone fragment

+2

Unknown, perhaps bone fragment - Measurement ~2cm

Unknown, perhaps bone fragment

Unknown, perhaps bone fragment

+3

Unknown, perhaps bone fragment - Measurement ~1.5cm

+1

Bone fragment - ~1cm

Bone fragment

Bone fragment

+1

Bone fragment - ~1cm

Bone fragment

Bone fragment

chordata

Ἡ τῶν Χόρδωτῶν ποικιλόμορφη συνομοταξία σπονδυλωτά τε και ὀλίγα ἀσπόνδυλα περιέχει. Τέσσαρα κύρια γνωρίσματα ἔχουσι· την νωτοχορδήν (ῥάβδος στηρίξεως), τον ῥαχιαῖον κοῖλον νευρικόν σωλῆνα (ἐγκέφαλος και νωτιαῖος μυελός), τας φαρυγγικάς σχισμάς (τῷ λαιμῷ ἀνοίγματα) και τον μεταπρωκτικόν κέρκον. Καίτοι τῇ ἐμβρυακῇ ἀναπτύξει μόνον τα γνωρίσματα ἐμφαίνεσθαι δύναται, ἡ ἐν οἱῳδήποτε σταδίῳ αὐτῶν παρουσία το ζῷον ὡς χορδωτόν τάσσει.

Ὑποομάδαι

Χονδριχθύες

Ὁμοταξία 🦴 14

Οστεϊχθύες

Κλάδος 🦴 41