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Gspsauridae
Taxonomy
Gspsauridae was named by Malkani (2015). Its type is Gspsaurus. It was considered monophyletic by Malkani (2020).
It was assigned to Titanosauria by Malkani (2015); and to Poripuchia by Malkani (2020), Malkani (2020), Malkani (2020).
It was assigned to Titanosauria by Malkani (2015); and to Poripuchia by Malkani (2020), Malkani (2020), Malkani (2020).
Subtaxa
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Gspsauridae Malkani 2015
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Subfm. †Gspsaurinae Malkani 2015
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Subfm. †Saraikimasoominae Malkani 2015
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. S. Malkani 2020 | Gspsauridae definition or main characters based on genus and species Gspsaurus pakistani. However Gspsauridae major differentiation characters from Pakisauridae are as U-shaped anterior upper jaw profile, anterior dentary rounded (no chin forming), highly vascularised and pneumatic rostrum and dentaries bones, broad reversed V-shaped ventral palatal processes laterally attached to upper maxillary ramus or upper jaw ramus, while dorsally attached to dorsal palatal process junction, V-shaped dorsal palatal hook attached on the contact of maxilla and premaxilla on both sides, slender and circular to slightly oval teeth with slender indices 3–5; conical and pointed teeth converge and taper on all sides from base toward tip (opposite of pakisaurids teeth which have almost same thickness except tip); ratio of mid transverse width above and below of mid caudal centrum varies from 1 to 2, the ventral view of mid caudal centra are strongly compressed, stocky tibia; proximal view of proximal stocky tibia circular to oval shaped (as opposite in Pakisauridae the flattened shaped proximal tibia), distal tibia is transversely more wide than anteroposteriorly width or distal tibia is anteroposteriorly less wide than transverse width (as opposite in Pakisauridae distal tibia is anteroposteriorly more wide than transverse width).
Gspsaurinae definition and main features based on genus and species Gspsaurus pakistani. Gspsaurinae the most inclusive clade of Titanosauria containing Gspsaurus pakistani but not Saraikimasoom vitakri. Gspsaurinae major differentiation features from Saraikimasoominae are as V shaped anterior dentaries symphyses profile or V shaped anterior junction of dentary rami (as opposite, Saraikimasoominae have broad U-shaped anterior junction of dentary ram), dentary symphysis, orientation, angled 15° or more anteriorly to axis of jaw ramus (as opposite, Saraikimasoominae have dentary symphysis, orientation, vertical or perpendicular to axis of jaw ramus), relatively large sized skull (as opposite, Saraikimasoominae have relatively small sized skull), relatively large, more slender, recurved conical, circular to slightly oval teeth (as opposite, Saraikimasoominae have relatively robust, small, slightly recurved conical, and circular to slightly oval teeth), Relatively large size (in thickness, width and length) dentary rami (as opposite, Saraikimasoominae have relatively small size dentary rami), ventral view of mid caudal centra compressed, mid caudal centra with the ratio of mid transverse width above and below varies from 1 to 1.5 (Saraikimasoominae have significantly reduced ventral view of mid caudal centra, mid caudal centra with the ratio of mid transverse width above and below varies from 1.5 to 2), and rel- atively large sized stocky tibia. |
Measurements
No measurements are available
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| Source: infrao = infraorder | |||||
| Reference: Marsh 1875 | |||||
Age range: Maastrichtian or 72.20000 to 66.00000 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | Pakistan (Balochistan) | Gspsaurus pakistani (220163) Gspsaurus pakistani, Balochisaurus malkani (79428) Ikqaumishan smqureshi (220150) Maojandino alami, Marisaurus jeffi (79666) Saraikimasoom vitakri (53153 79427 79669 79670 220141 220155 220156) Saraikimasoom vitakri, Gspsaurus pakistani (79429 79664 79665 79668) | |
| Maastrichtian | India (Gujarat) | Ikqaumishan smqureshi (34725) |