<![CDATA[1A Collections]]>

<![CDATA[1A Collections]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/browse?page=13&output=rss2 Tue, 09 Apr 2024 21:23:13 +0100 p1acollections@esc.cam.ac.uk (1A Collections) Zend_Feed http://blogs.law.harvard.edu/tech/rss <![CDATA[TF1003 Didymograptus]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/149

Title

TF1003

Didymograptus

Subject

Specimen Age

Ordovician

Location

Llandeilo, Abereiddy Bay, Wales

Description

Stratigraphic Range

Ordovician

Taxonomy

Phylum: Hemichordata
Class: Graptolithina
Genus: Didymograptus

Distinctive Features

Stipes (2)
Thecae
Rhabdosome
Nema
'sawtooth'

Preservation

Flattened
Carbon film
Pale colourisation from chlorine inclusion into the fossil

Advanced notes

The 'sawtooth' faces are facing each other. This is therefore a relatively old two stiped graptolite from the Ordovician. One specimen shows two graptolites with nemas overlapping. At first glance this could be mistaken for a four stiped graptolite, such as Tetrapgraptus, but close examination reveals that there are two animals, squashed on top of each other.

]]> Fri, 21 Jun 2019 11:59:38 +0100 <![CDATA[TF1002 Graptoloid graptolite]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/148

Title

TF1002

Graptoloid graptolite

Subject

Specimen Age

Ordovician

Location

Australia

Description

Stratigraphic Range

Ordovician

Taxonomy

Phylum: Hemichordata
Class: Graptolithina
Order: Graptoloidea

Distinctive Features

Thecae
Stipes
Rhabdosome
Nema

Preservation

Flattened
Carbon film
Red colour from iron in sediment seeping into fossil

Advanced notes

The number of stipes decreased over time, from 4 to 3 to 2. This specimen has 3 stipes, placing it between four stiped animals such as Tetragraptus and two stiped animals such as Didymograptus in time.

]]> Fri, 21 Jun 2019 11:50:36 +0100 <![CDATA[TF1001 Dendroid graptolites]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/146

Title

TF1001

Dendroid graptolites

Description

Stratigraphic Range

Cambrian to Carboniferous

Taxonomy

Phylum: Hemichordata
Class: Graptolithina
Order: Dendroidea

Distinctive Features

Numerous branching stipes
Colonial
Thecae

Preservation

Flattened

Advanced notes

In this specimen we cannot see the size of a potential holdfast. Because of this we cannot say if this is a planktonic or benthic animal.

Dendroid graptolites began as benthic organisms attaching to the seafloor with a holdfast, but some diversified as planktonic animals, with a reduced holdfast.

]]> Fri, 21 Jun 2019 11:45:55 +0100 <![CDATA[TF0208 Littorina muricata]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/145

Title

TF0208

Littorina muricata

Subject

Specimen Age

Jurassic

Location

Coralline Oolite, Upware, Cambridgeshire

Description

Species

Littorina muricata

Stratigraphic Range

Jurassic

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Littorina

Distinctive Features

Coiled shell (helical)
Spire
Body whorl

Preservation

External mould and external casts

]]> Fri, 21 Jun 2019 11:40:41 +0100 <![CDATA[TF0207 Barthrotomaria reticulata]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/144

Title

TF0207

Barthrotomaria reticulata

Subject

Specimen Age

Jurassic

Location

Coralline Oolite, Upware, Cambridgeshire

Description

Species

Barthrotomaria reticulata

Stratigraphic Range

Jurassic

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Barthrotomaria

Distinctive Features

Coiled shell (helical)
One chamber

Preservation

Steinkern
(here an internal cast)

]]> Fri, 21 Jun 2019 11:38:11 +0100 <![CDATA[TF0206 Scaphella lamberti]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/143

Title

TF0206

Scaphella lamberti

Subject

Specimen Age

Pliocene to Pleistocene

Description

Species

Scaphella lamberti

Stratigraphic Range

Paleocene to recent

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Scaphella

Distinctive Features

Coiled shell (helical)
One chamber
Aperture
Siphonal notch
Body whorl
Spire

Preservation

Original shell material

]]> Fri, 21 Jun 2019 11:36:08 +0100 <![CDATA[TF0205 Nucella]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/142

Title

TF0205

Nucella

Description

Stratigraphic Range

Pliocene to Pleistocene

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Nucella

Distinctive Features

Coiled shell (helical)
One chamber
Spire
Body whorl
Aperture

Preservation

Original shell material

]]> Fri, 21 Jun 2019 11:34:22 +0100 <![CDATA[TF0204 Murex]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/141

Title

TF0204

Murex

Subject

Specimen Age

Eocene

Description

Stratigraphic Range

Paleocene to recent

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Murex

Distinctive Features

Coiled shell (helical)
One chamber
Aperture
Siphonal notch
Spire

Preservation

Original shell material

]]> Fri, 21 Jun 2019 11:32:30 +0100 <![CDATA[TF0203 Nerinea]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/140

Title

TF0203

Nerinea

Subject

Specimen Age

Jurassic

Description

Stratigraphic Range

Jurassic to Cretaceous

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Nerinea

Distinctive Features

Coiled shell (helical)

Preservation

Remineralisation of shell material

]]> Fri, 21 Jun 2019 11:31:00 +0100 <![CDATA[TF0202 Pleurotomaria]]> https://wserv3.esc.cam.ac.uk/p1acollections/items/show/139

Title

TF0202

Pleurotomaria

Subject

Specimen Age

Jurassic

Description

Stratigraphic Range

Jurassic to Cretaceous

Taxonomy

Phylum: Mollusca
Class: Gastropoda
Genus: Pleurotomaria

Distinctive Features

Coiled shell (helical)
One chamber
Aperture
Spire
Body whorl

Preservation

Remineralised shell material

]]> Fri, 21 Jun 2019 11:28:55 +0100