Fig 1.
Tulumella unidens (Thermosbaenacea), photographs and video-sequences of live ovigerous female and advanced developmental stages.
A, lateral view. B, lateral view. C, frontal view. D, lateral view of newly released specimen. E, dorsal view of advanced stage. F, close-up of advanced stage in brood pouch with ventrally flexing body (arrows). G, close-up of ovigerous female showing posterior opening of brood pouch (arrow). H, ovigerous female in the process of releasing an advanced developmental specimen (arrow). I, newly released specimen with ventrally flexing body (arrows).
Fig 2.
Tulumella unidens (Thermosbaenacea), photographs of ovigerous female (fixed specimen).
A, with reflected light. B, with transmitted light.
Fig 3.
Tulumella unidens (Thermosbaenacea), scanning electron micrographs of ovigerous female.
A, lateral view. B, posterior view with part of brood pouch/carapace removed. C, close-up of dorsal part of thorax after removal of brood pouch. D, close-up of dorsal part of thorax after removal of brood pouch. E, lobate structures (epipods?) of thoracic segments 1 (maxillipedal) and 2.
Fig 4.
Tulumella unidens (Thermosbaenacea), scanning electron micrographs of ovigerous female.
A, B, posterior view showing uropods, telson, pleon and posterior margin of brood pouch (carapace). C, D, right side posterior margin of brood pouch (carapace) showing large marginal spines and developmental stages inside. E, close-up of marginal spines.
Fig 5.
Tulumella unidens (Thermosbaenacea), scanning electron micrographs of late developmental stages removed from brood pouch of ovigerous female.
A, whole view from lateral. B, telson and uropods. C, whole view from lateral. D, embryonic dorsal organ. E, whole view from antero-lateral. F, thoracopods and pleopods from ventral. G,pleon and part of thorax seen from lateral. H, postero-lateral view of thoracopods (pereiopods) of left side. Colour code: Red-coxa, yellow-basis, green-endopod, blue-exopod, purple-epipod.
Fig 6.
Tulumella unidens (Thermosbaenacea), scanning electron micrographs of late developmental stages removed from brood pouch of ovigerous female.
A, whole view from lateral. B, posterior margin and attachment region of carapace seen from postero-lateral. C, lateral view of cephalic appendages (antenna 1 to maxilliped) and pereiopod 1 of left side. D, buds of maxilla 1, 2 and maxilliped seen from antero-lateral. E, maxilliped and pereiopod 1 seen from lateral. F, lateral side of cephalon with part of carapace removed which reveals its zone of attachment. Colour code: Red-coxa, yellow-basis, green-endopod, blue-exopod, purple-epipod.
Fig 7.
Tulumella unidens (Thermosbaenacea), scanning electron micrographs of late developmental stages removed from brood pouch of ovigerous female.
A, whole view from ventral. B, close-up of cephalic appendages from ventral. C, labrum, paragnaths, and proximal parts of antenna 2 and mandible. D, coxal endite (= ‘naupliar process’) of antenna 2. E, proximal parts of antenna 2 and mandible. F, median view of cephalic appendages (antenna 2 to maxilla 2). G, median view of cephalic appendages (antenna 2 to maxilliped). Colour code: Red-coxa, yellow-basis, green-endopod, blue-exopod, purple-epipod.
Fig 8.
Antenna 1, 2, and mandible of Tulumella unidens (Thermosbaenacea), with presumed homologous structures indicated by same colour code: Red-coxa, yellow-basis, green-endopod, blue-exopod, purple-epipod.
Compiled and modified from Wagner (1994).
Fig 9.
Certain mouth parts (maxilla 1, 2, and maxilliped) of three species of the Thermosbaenacea covering most variation, with presumed homologous structures indicated by same colour code: Red-coxa, yellow-basis, green-endopod, blue-exopod, purple-epipod.
Compiled and modified from Wagner (1994).