<![CDATA[1A Collections]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/browse?page=17&output=rss2 Tue, 09 Apr 2024 21:24:05 +0100 p1acollections@esc.cam.ac.uk (1A Collections) Zend_Feed http://blogs.law.harvard.edu/tech/rss <![CDATA[TF0706 Ornithella]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/108

Title

TF0706

Ornithella

Description

Stratigraphic Range

Jurassic

Taxonomy

Phylum: Brachiopoda
Class: Rhynchonellata
Order: Terebratulida

Distinctive Features

Bilateral symmetry
Two articulated valves
Commissure
Growth lines
Pedicle

Preservation

Mineral replacement of shell
TF0706_HS.png
TF0706_sketch.png
]]> Thu, 20 Jun 2019 12:31:55 +0100 <![CDATA[TF0705 Spirifer verneuli]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/107

Title

TF0705

Spirifer verneuli

Subject

Specimen Age

Devonian

Description

Species

Spirifer verneuli

Stratigraphic Range

Ordovician to Permian

Taxonomy

Phylum: Brachiopoda
Class: Rhynchonellata
Order: Spiriferida

Distinctive Features

Bilateral symmetry
Two articulated valves
Commissure
Ribs
Pedicle

Preservation

Internal mould
TF0705_HS.png
TF0705_sketch.png
]]> Thu, 20 Jun 2019 12:29:49 +0100 <![CDATA[TF0704 Chonetes]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/106

Title

TF0704

Chonetes

Subject

Specimen Age

Silurian

Description

Stratigraphic Range

Ordovician to Permian

Taxonomy

Phylum: Brachiopoda
Class: Strophomenata
Order: Strophomenida

Distinctive Features

Bilateral symmetry
Ribs

Preservation

External moulds and internal moulds
TF0704_HS.png
TF0704_sketch.png
]]> Thu, 20 Jun 2019 12:24:17 +0100 <![CDATA[TF0703 Atrypa]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/105

Title

TF0703

Atrypa

Subject

Specimen Age

Silurian

Description

Stratigraphic Range

Silurian to Devonian

Taxonomy

Phylum: Brachiopoda
Class: Rhynchonellata
Order: Spiriferida
Genus: Atrypa

Distinctive Features

Bilateral symmetry
Two valves
Commissure
Radial ribs
Growth lines

Preservation

Mineral replacement of shell
TF0703_HS.png
TF0703_sketch.png
]]> Thu, 20 Jun 2019 12:21:45 +0100 <![CDATA[TF0702 Orthis]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/104

Title

TF0702

Orthis

Description

Stratigraphic Range

Ordovician

Taxonomy

Phylum: Brachiopoda
Class: Rhynchonellata
Order: Orthida
Genus: Orthis

Distinctive Features

Bilateral symmetry
Radiating ribs

Preservation

External mould
TF0702_HS.png
TF0702_sketch.png
]]> Thu, 20 Jun 2019 12:19:10 +0100 <![CDATA[TF0701 Lingulella]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/103

Title

TF0701

Lingulella

Subject

Age

Cambrian

Description

Stratigraphic Range

Cambrian to Ordovician

Taxonomy

Phylum: Brachiopoda
Class: Lingulata
Order: Lingulida
Genus: Lingulella

Distinctive Features

Bilateral symmetry
Growth lines

Preservation

Organic film

Advanced notes

Lingulella had a phosphate shell in life, which is rare for a brachiopod. Most brachiopods had shells made from calcium carbonate.
Lingulella is very similar to the modern genus Lingula.
TF0701_HS.png
TF0701_sketch.png
]]> Thu, 20 Jun 2019 12:15:02 +0100 <![CDATA[Brachiopod]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/102

Title

Brachiopod

Description

Taxonomy

Phylum: Brachiopoda

Diagnostic features

Two valves (brachial and pedicle)

Bilateral symmetry

Growth lines

Adductor and ductor muscle scars

Pedicle

Commissure

Gape

Teeth and socket (articulates; no teeth or socket in inarticulates)

Stratigraphic range

Cambrian to present

Way of life

Marine

Attach to hard substrates using pedicle

Filter feeding

Sessile

Infaunal, epifaunal, reclining

Advanced notes

Apparent decrease in diversity over time

Limited to marginal environments in the modern ocean

Adductor muscle used to close shell, ductor muscle used to open shell

Specimens

Browse brachiopods

External links

Yale Peabody Museum of Natural History: differences between bivalves and brachiopods

Cortland Paleo, Brachiopoda: brachiopod morphology and ecology information

Learn about types of preservation

brachiopod_sketch.png
brachiopod_sketch_profile.png
]]> Thu, 20 Jun 2019 12:12:49 +0100 <![CDATA[TF0151 Bivalve (manmade external mould)]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/101

Title

TF0151

Bivalve (manmade external mould)

Description

Taxonomy

Phylum: Mollusca
Class: Bivalvia

Distinctive Features

Ribs

Preservation

Manmade external mould

Advanced notes

Although this particular specimen is a manmade mould, internal and external moulds are common ways in which bivalves are preserved.

Because they commonly disarticulate after death, external and internal moulds of one valve are also common, with the impression of the shell outlasting the shell itself, which is often dissolved.
TF0151_HS.png
TF0151_sketch.png
]]> Thu, 20 Jun 2019 12:06:17 +0100 <![CDATA[TF0115 Glycymeris]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/100

Title

TF0115

Glycymeris

Description

Stratigraphic Range

Cretaceous to recent

Taxonomy

Phylum: Mollusca
Class: Bivalvia
Order: Arcoida
Family: Glycymerididae

Distinctive Features

Growth lines
Adductor muscle scars
Hinge
Palial line

Preservation

Original shell
TF0115_HS.png
TF0115_sketch.png
]]> Thu, 20 Jun 2019 12:02:36 +0100 <![CDATA[TF0114 Unio littoralis]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/99

Title

TF0114

Unio littoralis

Subject

Location

River gravels, Burwell, Cambridgeshire

Description

Species

Unio littoralis

Taxonomy

Phylum: Mollusca
Class: Bivalvia
Order: Unionata
Family: Unionidae

Distinctive Features

Umbo
Two valves showing dorso-ventral symmetry
Growth lines
Adductor muscle scar
Palial line
Dentition

Preservation

Original shell

Advanced notes

Mobile, infaunal suspension feeder
TF0114_HS.png
TF0114_sketch.png
]]> Thu, 20 Jun 2019 11:57:03 +0100