Media 000490817: Theca
Open Download
Type Volumetric Image Series
Modality X-Ray Computed Tomography (CT/microCT)
Media represents biological specimen

Media Display

In Collections

GENERAL DETAILS Field Definitions

Media ID
000490817
Media type
Volumetric Image Series
Object element or part
Theca
Object represented
Object taxonomy
Hyperoblastus sp.
Side
--
Orientation
--
Short description
Scan data files and scan settings of the Hyperoblastus (CMC_IP_37404) theca. The folder titled rec_16bit_0 contains absorption scan slices (2479) are saved in .bmp form. Slices contained in 000490275 and 000490817 can be used to interpret the data; however, phase contrast (000490275) slices where the ones used in this reconstruction. Scan settings are contained in the description attachment file (scan resolution and voxel size for calculating scale).
Full description
Brooding of young is a reproductive strategy observed in many extant echinoderms, but the evolutionary history of this behaviour is largely unknown due to the scarcity of examples preserved in the fossil record. Synchrotron X-ray tomography is used to describe an exceptionally preserved specimen of the Devonian blastoid echinoderm Hyperoblastus reimanni. The coelomic cavity appears completely preserved in a coiled arrangement partially enclosing organs associated with the digestive, haemal and axial systems. The vault region of the coelom surrounds four structures interpreted as three internally brooded larvae and a gonad. The presence of putative larvae brooded internally in this specimen sheds new light on the reproductive strategies employed by blastoids, suggesting they were sexually dimorphic and that internal brooding was acquired early in the group’s history. The acquisition of brooding may have been linked to high clastic sediment influx associated with the Appalachian Orogeny, which would have been detrimental to the survival of larvae living at the soupy sediment–water interface.
Creator
--
Date created
--
Date uploaded
January 09, 2023

FILE OBJECT DETAILS Field Definitions

File name
File format(s)
ZIP archive, BMP
File size
5.53 GB
Image width
2200
Image height
2419
Color space
--
Color depth
8
Compression
0; None; BI_RGB
X pixel spacing
0.003250
Y pixel spacing
0.003250
Z pixel spacing
0.003250
Pixel spacing units
Mm
Slice thickness
--
Number of images in set
2,480

IMAGE ACQUISITION AND PROCESSING AT A GLANCE Field Definitions

Number of parent media
0
Number of processing events
0 (0 steps)
Modality
X-Ray Computed Tomography (CT/microCT)
Device
TOMCAT Beamline X02DA, Swiss Light Source (Paul Scherrer Institut)

OWNERSHIP AND PERMISSIONS Field Definitions

Data managed by
Data uploaded by
Publication status
Open Download
Download reviewer
IP holder
--
Copyright statement
--
Creative Commons license
--
Morphosource use agreement type
Standard
Permits commercial use
Commercial Use Not Permitted
Permits 3D use
3D Printing Limited
Required archival of published derivatives
On MorphoSource
Funding attribution
--
Publisher
--
Cite as
--
Media preview mode
Interactive/Embeddable
Additional usage agreement
None

IDENTIFIERS AND EXTERNAL LINKS Field Definitions

MorphoSource ARK
MorphoSource DOI
External identifier
--
External media URL
--

IMAGE ACQUISITION AND PROCESSING IN DETAIL

STEP 1: IMAGE ACQUISITION

Physical object cmc:IP 37404 was imaged to create this media.

IMAGING DETAILS Field Definitions

Modality
X-Ray Computed Tomography (CT/microCT)
Device facility
Swiss Light Source (Paul Scherrer Institut)
Creator
--
Event date
--
Software
--
Description
--
Description attachment
Reference attachment
None
Filter
--
Exposure time
600ms
Flux normalization
--
Pixel spacing calibration
--
Shading correction
--
Frame averaging
--
Projections
1501
Voltage
37keV
Power
--
Amperage
--
Surrounding material
--
X-ray tube type
--
Target type
--
Detector type
--
Detector pixels X
--
Detector pixels size X
--
Detector pixels Y
--
Detector pixels size Y
--
Detector configuration
--
Source object distance
--
Source detector distance
--
Target material
--
Rotation number
--
Phase contrast
No
Optical magnification
--
Acquisition type
--

Media produced by this event on MorphoSource

Media 000490817: Theca [CTImageSeries] [CT] (this media)